Han Chang'an bet365 sign up bonus code served as the capital of the Western Han Dynasty and Xinmang，It is national politics、Economy、Military and cultural center。The fifth year of Emperor Gao of the Han Dynasty (202 BC)，Established in Chang'an County，"Governing Changle Palace"；Seven years，"Changle Palace Success，The Prime Minister has moved down to govern Chang'an"。Changle Palace is the earliest urban area built in Chang'an bet365 sign up bonus code，If counted from the time of its completion，The history of Chang'an bet365 sign up bonus code has been 2221 years so far。Chang'an bet365 sign up bonus code of the Han Dynasty is the starting point of the Silk Road，Joined with Rome as the largest in the world at that time、The most important bet365 sign up bonus code。2014，The ruins of Weiyang Palace in Chang'an bet365 sign up bonus code of the Han Dynasty were included in the "Silk Road: Road Network of Chang'an-Tianshan Corridor" World Cultural Heritage List。The ruins of Han Chang'an bet365 sign up bonus code are located in the northwest of Xi'an bet365 sign up bonus code, Shaanxi Province，In 1961, it was announced by the State Council as the first batch of national key cultural relics protection units。Important sites related to Chang'an bet365 sign up bonus code，For example, the Zhaolun coin casting site located in the southwest suburbs，In 2001, it was announced as the fifth batch of national key cultural relics protection units；The ruins of Jianzhang Palace in the western suburbs，Announced as the seventh batch of national key cultural relics protection units in 2013；Zhongweiqiao ruins in the northern suburbs，Announced as the eighth batch of national key cultural relics protection units in 2019。

　　Continuously carry out exploration and excavation

October 1956，The Institute of Archeology, Chinese Academy of Sciences (renamed under the Chinese Academy of Social Sciences in 1977) established an archaeological team，Carry out long-term research on the ruins of Han Chang'an bet365 sign up bonus code、Planned archaeological investigation、Exploration、Excavation and Research。First to excavate the ritual building ruins in the southern suburbs，Simultaneous Exploration、Tried to dig the bet365 sign up bonus code wall。1957，The Ba bet365 sign up bonus code Gate was excavated、Xi’an Gate、Zhicheng Gate and Xuanping Gate Ruins。1961-1962，Preliminary exploration of the distribution of streets and main palaces in the bet365 sign up bonus code。Later half of 1970s，Conducted a comprehensive exploration and key excavation of the arsenal site。80s，The Weiyang Palace ruins were explored、Discover，And exploration in the northwest of the bet365 sign up bonus code found large building ruins south of Hengmen and the area surrounded by rammed earth walls on the east and west sides of Hengmen Street。90s，Archaeological work is carried out in many places，Understand the connotation of the northwest handicraft workshop area through excavation，The location and scope of Beigong were initially determined through exploration，Find out the basic situation of Katsura Palace through exploration and excavation。

　2001-2010，Focus on comprehensive exploration and key excavation of the Changle Palace site；The Xiangjiaxiang ruins were also excavated；Sixteen countries discovered during exploration、The palace ruins of Chang'an bet365 sign up bonus code in the Northern Dynasties，And discover the palace gate；The second cleanup of the Zhicheng Gate and Xi’an Gate ruins；Conducted test excavation on Zhichengmen Street；The ruins of Lianshui Bridge were excavated in the southwest suburbs；Excavation of the No. 1 building site in Jianzhang Palace；Exploring in Shanglinyuan、Tried to excavate the Kunming Pool site，Excavation of multiple palace villa ruins。2011-2015，Re-exploration and excavation of the Weiyang Palace ruins were mainly carried out in conjunction with the "World Heritage Application" work；The architectural ruins outside Xi’an Gate were excavated in the south of the bet365 sign up bonus code；The Taiyechi site was explored in Jianzhang Palace；The ruins of the Wei Bridge outside the Kitchen bet365 sign up bonus code Gate were excavated in the north of the bet365 sign up bonus code。2015、2018，Start to inspect the Zhaolun money casting site respectively、Planned exploration and excavation of Beigong ruins。

　　Achieve fruitful results

After 65 years of archaeological exploration，Archaeologists have basically figured out the plane shape and scale of Han Chang'an bet365 sign up bonus code、Structure of bet365 sign up bonus code walls and moats、The shape of bet365 sign up bonus code gates and bet365 sign up bonus code streets、Distribution of water systems inside and outside the bet365 sign up bonus code，As well as Weiyang Palace and Changle Palace、Katsura Palace、Scope and layout of Beigong、Arsenal location and building configuration、Types of handicraft workshops in northwest China。Represented by the ritual buildings in the southern suburbs，The appearance of the suburbs is gradually becoming clearer。

Han Chang'an bet365 sign up bonus code is nearly square in plan，The bet365 sign up bonus code wall is made of soil rammed layer by layer，The east wall is 6000 meters long、The southern bet365 sign up bonus code wall is 7600 meters long、The west bet365 sign up bonus code wall is 4900 meters long、North bet365 sign up bonus code wall is 7200 meters long，Area of ​​about 36 square kilometers。There are 3 gates on each wall，The east wall is Xuanping Gate from north to south、Qingming Gate and Bacheng Gate；The north wall from east to west is Luo bet365 sign up bonus code Gate、Chucheng Gate and Hengmen；The west wall is Yongmen from north to south、Zhicheng Gate and Zhangcheng Gate；The south wall is Xi’an Gate from west to east、Anmen and Fu'anmen。Each bet365 sign up bonus code gate has 3 doorways，Each doorway is about 6 meters wide。There is a trench surrounding the bet365 sign up bonus code wall。The ditches on both sides of the streets in the bet365 sign up bonus code form a complete drainage system，Through the culvert under the bet365 sign up bonus code gate to the ditch outside the bet365 sign up bonus code。

Except for the four bet365 sign up bonus code gates opposite Weiyang Palace and Changle Palace，The remaining 8 bet365 sign up bonus code gates are connected to the main streets in the bet365 sign up bonus code，Form 8 straight streets。8 streets divide the bet365 sign up bonus code into 11 districts，Central、There is Weiyang Palace in the south (including the arsenal and the "Dongdi" residence area to the south)、Channgle Palace、Katsura Palace、Beigong and Mingguang Palace，occupies 5 areas；Katsura Palace、Between the North Palace and the North Palace may be the "North Palace" residential area；Northwestern handicraft workshops and markets occupy 3 areas；District 2 in the northeast may be Luli。

Weiyang Palace is the imperial palace，In the southwest of the bet365 sign up bonus code，The front hall is the main hall of the Great Chao Dynasty，Living in the center of the palace，There is a royal garden centered on Cangchi in the southwest，The northwest is the government district。Channgle Palace is located in the southeast of the bet365 sign up bonus code，Liu Bang, the emperor of Han Dynasty, used it as an imperial palace，After Emperor Hui, it was the residence of the Queen Mother，Front Hall、Linhua Hall and other important buildings are in the northwest of the palace，Garden buildings are located in the northeast。Gui Palace is located in the area near the bet365 sign up bonus code wall to the north of Weiyang Palace，The residence of the concubine，The main palace is in the south of the palace。Beigong is located northwest of Changle Palace，The deposed concubines often live in this palace，The main palace is in the southeast of the palace。According to records，Mingguang Palace is located north of Changle Palace，Still to be explored。

The arsenal is located on the west side of Anmen Street between Weiyang Palace and Changle Palace in the south of the bet365 sign up bonus code。The noble residence is located north of Weiyang Palace、Edom region。The residences of ordinary people are mainly located in the northeast of the bet365 sign up bonus code，The area north of Xuanpingmen Street。The handicraft workshop area is mainly located in the northwest of the bet365 sign up bonus code，Pottery making is distributed、Cast iron and coin casting sites。According to records，There is something east in Chang'an bet365 sign up bonus code、Xi'er bet365 sign up bonus code，Should live on the east and west sides of Chuchengmen Street separately。

Although the archaeological work of Han Chang'an bet365 sign up bonus code has achieved fruitful results，But there are still many problems left，Such as the location of Mingguang Palace and the East and West markets、Living space for people from all walks of life, etc.，All yet to be explored。

Summary of the archaeological history of Chang'an bet365 sign up bonus code in the Han Dynasty，It will help to carry out better work in the future。First，Have long-term plans and clear goals。As Wang Zhongshu, the first captain of the archaeological team, said in his first summary of field work，The archaeological work of Han Chang'an bet365 sign up bonus code drew a blueprint from the beginning，Continuously achieve new results and new progress。Second，I figured out a set of working methods earlier。When Huang Zhanyue was surveying the ruins of ritual buildings in the southern suburbs，Due to the very tight construction schedule，Huge workload，So widespread drilling was adopted、A method that combines partial exposure and key excavation，Practice has proven that this method is effective。Third，The archeology of Han Chang'an bet365 sign up bonus code has always served the overall development of the country。The initial archaeological work of Han Chang'an bet365 sign up bonus code was carried out in the 1950s in conjunction with the construction of several national key enterprises；Later half of 1970s，Concentrated excavation of the arsenal ruins exposed during land leveling；Since 2000，Cooperate with infrastructure construction、Projects such as protection of large heritage sites and declaration of world cultural heritage，Carried out a series of key excavations，Effectively guarantees the smooth completion of all work。Fourth，The archeology of Chang'an bet365 sign up bonus code in the Han Dynasty was an early stage of multidisciplinary research。For example, ancient architects inspected the excavation site of ritual building ruins in the southern suburbs，Conducted architectural restoration research；Paleogeographers’ analysis of the Ling River around Chang’an bet365 sign up bonus code in the Han Dynasty、Kunming Guqu、On-the-spot investigation and restoration research on water systems such as Cao Canal。

　　Provide rich physical information

Han Chang'an bet365 sign up bonus code witnessed the Western Han Dynasty、The historical process of Xinmang for more than 200 years，The many results achieved by archaeological work have provided a wealth of physical data to deeply reveal its characteristics and value。

The Han Dynasty Chang'an bet365 sign up bonus code is huge、The streets are orderly、Organized layout、Perfect function，It is an innovative bet365 sign up bonus code built to adapt to the new dynasty。The location of Chang'an bet365 sign up bonus code is a reasonable use of natural conditions，bet365 sign up bonus code Wall、The moats constitute a solid bet365 sign up bonus code defense system，bet365 sign up bonus code Gate、The streets form a convenient transportation network and drainage system。Warehouse abundance、Market is booming，Provided sufficient material support for the bet365 sign up bonus code。

The Han Dynasty Chang'an bet365 sign up bonus code has many palaces and many high-level residences，Occupying more than two-thirds of the bet365 sign up bonus code area，Highlighting the political nature of the capital，Reflects the political characteristics of the Western Han Dynasty。The tall bet365 sign up bonus code gates and majestic palaces reflect the majesty of the capital，These buildings are materialized symbols of the concept of imperial supremacy。Ritual buildings are scattered inside and outside the bet365 sign up bonus code，Via Sheji、Ancestral Temple、Sacrifice of Heaven and Earth and Sacrifice of Five Emperors，Indicate the rationality of the existence of the ruler、legitimacy，Standardize the hierarchical order of society，Maintain social stability。

A gathering of talents in Chang'an bet365 sign up bonus code of the Han Dynasty、Prosperous culture。From the Huang-Lao thought in the early Western Han Dynasty to the "deposing of hundreds of schools of thought" in the middle period，Only respect Confucianism”，Ideological leadership promotes social development。The rise of Taixue，Trained a large number of students。Shiqu Pavilion in the north of Weiyang Palace、Tianlu Pavilion has a rich collection of books，Scholars gather here，Formed a center of cultural innovation。

The archeology of Han Chang'an bet365 sign up bonus code adds new information to the study of the history of science and technology。bet365 sign up bonus code Gate、Palace、Arsenal、Excavation of Lingshi and Weihe River Ancient Bridge，Enriched the types of architecture in the Han Dynasty；Kunming Pool、The canal is a major project for water conservancy and waterway transportation；Cast iron、Copper unearthed from coin workshops and arsenals、Iron weapons represented the highest level of metallurgical technology at that time。The unearthed jade certificate、Bone Tag、Wooden Slips、Text materials such as mud seals and pottery stamps，It is an important supplement to historical documents。

The capital is a place where the material civilization and spiritual civilization of a dynasty gather。The ruins of Han Chang'an bet365 sign up bonus code are precious cultural heritage left to us by the ancients，Has extremely high excavation and research value。simultaneously，On the basis of scientific protection，also has display、The practical role of inheriting historical and cultural traditions。Archaeology of Han Chang’an bet365 sign up bonus code Site、Protection work has a long way to go。

(The author is a researcher at the Institute of Archeology, Chinese Academy of Social Sciences、Captain of the Han Chang’an bet365 sign up bonus code Archaeological Team)