In the history of East Asian agriculture，China often adopts economic crop planting and product processing technology through culture、Spread to neighboring countries through economic and trade methods，Powerfully promoted the agricultural development of neighboring countries，The spread of bet365 promo codes production is one of the most typical cases。The ancient Ryukyu Kingdom in its exchanges with China，Acquired the most advanced bet365 promo codes-making technology at the time。Ryukyu relies on its own unique geographical conditions，The bet365 promo codes industry has developed rapidly in just over ten years。bet365 promo codes has since become the economic pillar of the Ryukyu Kingdom，It has a profound impact on its historical development。

　　Propagation path in East Asia

Ancient China in its interactions with neighboring countries，Started exporting bet365 promo codes products very early。Records in "The Biography of the Monk of the Tang Dynasty on the Eastern Expedition" written by the Japanese real person Yuan Kai，The items that Jianzhen carried when he traveled eastward were "Bibao again"、Harile、Pepper、Asafoetida、Shimi、More than 500 kilograms of sucrose etc.”。"Stone honey" is rock bet365 promo codes，"Sucrose" means granulated bet365 promo codes。Early 17th century，The Amami Oshima Island, which was still under the jurisdiction of Ryukyu at that time, already had technology that could produce bet365 promo codes in large quantities。According to later legends，The cause was that Satoshi Naokawa, a native of Oshima, encountered a shipwreck on his way to the main island of Ryukyu，Ship drifts to Fujian，Naokawa Satoshi took advantage of the opportunity to come to China，Learned the local bet365 promo codes making method，And brought sugarcane seedlings back to China to promote them in his hometown。Later, Amami Oshima came under the jurisdiction of Japan，Given the success of the local bet365 promo codes industry，Across Japan, trials of growing bet365 promo codes cane and bet365 promo codes production have begun，A bet365 promo codes industry region centered on Sanuki and Awa in Shikoku was finally formed，This incident is regarded as the origin of Japan’s bet365 promo codes production history。

The beginning of the development of the Ryukyu Kingdom’s bet365 promo codes industry，It was the bet365 promo codes-making method that spread to Ryukyu through trade between China and Ryukyu。The specific time when bet365 promo codes cane was introduced to Ryukyu is unknown，North Korea's "Records of the Ri Dynasty" records December of the seventh year of King Sejo's reign (1461)，Ryukyu envoy Pusugu、Deputy envoy Cai Jing went to North Korea to negotiate on the issue of drifters。Because the containers are similar，The messenger mistakenly presented molasses as "Tianzhu wine" to the King of Korea，"Xunhuo opens the eyes，Zhefeijiu，It’s bet365 promo codes bet365 promo codes”，Indicates that Ryukyu was able to make liquid molasses from bet365 promo codes cane in the 15th century。The eleventh year of Jiajing in the Ming Dynasty (1532)，Chen Kan is on a mission to Ryukyu，In his canonization record, it is recorded: "The fruit will have bananas、bet365 promo codes cane、Pomegranate、Orange、Persimmons and the like。People say winter melon can quench thirst，bet365 promo codes cane is as big as a bowl，None of them。”This shows that Ryukyu has a long history of growing bet365 promo codes cane，And always regard it as a sweet food。Contained in "The Chronicles of the Ryukyu Kingdom" by Zhou Huang, who was entrusted as envoy during the Qianlong period of the Qing Dynasty，Ryukyu’s bet365 promo codes cane is “red”、Short section，All year round。smaller，Used to make bet365 promo codes”。

An opportunity to truly bring about major changes in the Ryukyu bet365 promo codes industry，It is the tribute trade between China and Ryukyu with Fujian as the fulcrum。Since Ryukyu sent envoys to pay tribute in 1372，The tribute envoy must disembark from Fujian，Check into Ryukyu Hall，Choose another day to go to Beijing。As an extension of tribute activities，With the permission of the Chinese court, Ryukyu sent overseas students with the delegation。Except for the "official students" who officially entered the Imperial College to study，There are also "diligent students" who go to China at their own expense to mainly study technology，These "diligent students" are responsible for bringing China's advanced production technology back to Ryukyu to promote social development。During the Ming and Qing Dynasties，Fujian is one of the main sugarcane producing areas in China。Wanli Period，Fujian’s bet365 promo codes production technology has undergone major evolution，The use of sugarcane trucks and the popularization of yellow mud bet365 promo codes production increased bet365 promo codes production。These technologies were also introduced to Ryukyu in the late Ming Dynasty through "diligent students" coming to China to study。

　Introduction of Chinese bet365 promo codes production method

　Ryukyu official rituals in the early 17th century，Chinese name Ma Balance，Attach great importance to the introduction of foreign cash crops to Ryukyu to promote economic development。Hemp Balance has created a certain scale of kapok cultivation in Ryukyu，We also tried growing sweet potatoes brought back from Fujian by Manager Yeguo，all successful。From now on，Sweet potato has become one of the important food sources in Ryukyu。Tomorrow will start for the third year (1623)，Ma Pingping sent villagers in his territory to Fuzhou on tribute ships，Learn the most advanced bet365 promo codes-making technology at that time from the Fujian people，And bring it back to Ryukyu。There is a record in "Qiuyang", the history book of the Ryukyu Kingdom, "It took three years for Ma Hejian to start making brown bet365 promo codes": "Ma Hejing was deeply concerned about the fact that the country had bet365 promo codes cane but did not know how to make bet365 promo codes.，So the people from Yijian Village were ordered to go to Fujian，Learned how to make bet365 promo codes，Just now at the Balance House, I have taken bet365 promo codes cane juice to boil brown bet365 promo codes，Finally reached the country。" "Old Records of the Ryukyu Kingdom" also records: "Although our country has had bet365 promo codes cane since ancient times，But the people don’t know how to make bet365 promo codes。Guihai in the third year of Tianqi，The people of Yijianyi left (went to) Fujian with the tribute envoy，Ma's Yi Jian's close friend Yun Shangzhen often asked him to learn how to make bet365 promo codes，He is in Fuzhou，Come back after learning how to make bet365 promo codes，Really happy，The construction started when bet365 promo codes cane was planted in the house，It has spread throughout the country。”It can be seen that the bet365 promo codes production method of the Ryukyu Kingdom originated in Fujian，Spread to Ryukyu through production technology exchange，After small-scale trials of hemp balance，Gradually promoted to the country。

Before the introduction of Hemp Balance into the Chinese bet365 promo codes Process，The Ryukyuan people’s method of producing sucrose is still quite primitive，People peel and cut the harvested bet365 promo codes cane into two or three-inch pieces，Put it in a stone mortar and pound it，Put it into the bag，Put it in a bamboo cage to squeeze juice，Crystallize bet365 promo codes cane juice with lime to obtain bet365 promo codes cubes。This method is labor-intensive、Lack of efficiency、High bet365 promo codes loss rate，Did not have a decisive impact on Ryukyu agriculture。The method introduced from Fujian by Hemp Balance is called the "two-rotor and three-pot method"，The second rotor is a wooden juice car，The juicer cart is driven in circles by cattle, horses and other livestock，Squeeze the bet365 promo codes juice through two vertical wooden rollers on the car，Put the lime-clarified bet365 promo codes juice into a three-mouthed iron pot and boil it，Finally put the thick bet365 promo codes juice into a large pot for crystallization。The juice extraction part is done by animal power，Refining is done manually，Continuous operation，Extract bet365 promo codes juice in one go，And the bet365 promo codes retention rate can reach more than 30%，Promoted soon。

The first year of Kangxi’s reign in the Qing Dynasty (1662)，The Ryukyu Kingdom aims to improve the quality of bet365 promo codes，Also sent "diligent student" Lu De to follow the congratulatory envoy to Gushan, Fuzhou，Learn how to make white bet365 promo codes and rock bet365 promo codes from the locals。The so-called white bet365 promo codes production method is the yellow mud slurry decolorization method that originated in Fujian，The rock bet365 promo codes production method is the white bet365 promo codes refining method。The two bet365 promo codes-making methods that Lu Dexian brought back to Ryukyu have been widely spread in Ryukyu。Contained in Zhou Huang's "A Brief History of the Ryukyu Kingdom"，Ryukyu bet365 promo codes made from crushed sugarcane juice，There is also rock candy、white frost”。Compared to brown bet365 promo codes，White bet365 promo codes and rock bet365 promo codes only account for a small part of the total bet365 promo codes。The overall quality of Ryukyu bet365 promo codes is not outstanding in the early stage，But since the introduction of China’s bet365 promo codes production method，Ryukyu can stably produce bet365 promo codes in large quantities。

　　Ryukyu forms bet365 promo codes economy

The manufacturing of bet365 promo codes includes harvesting、Juicing、Cooked、Precipitation、Transportation、Storage and other processes，Each link requires more labor than ordinary crops，Farmers cannot produce alone。Therefore，Ryukyu produced a series of new bet365 promo codes production systems in the mid-17th century。The first is the establishment of the "bet365 promo codes House"，All villages in Ryukyu that are allowed to produce bet365 promo codes have established animal-powered bet365 promo codes factories。"bet365 promo codes House" is adjacent to bet365 promo codes cane fields，Villagers plant bet365 promo codes cane under the strict supervision of local officials，Enter the factory after the bet365 promo codes cane is harvested，Complete the process of juicing and boiling syrup from the bet365 promo codes truck。Secondly, bet365 promo codes farmers’ neighbors and relatives formed a group called “bet365 promo codes and”，Participate in collective production。"bet365 promo codes and" usually consists of five people，The order of entering the bet365 promo codes house is determined by the maturity of the bet365 promo codes cane field。This kind of production organization works together in the village，Shared taxes。Overall，The introduction of China’s bet365 promo codes production method，Promoted the development of Ryukyu’s village-based collective economy。

Ryukyu sugarcane planting adopts the Chinese farming season of spring planting and autumn harvest，But sugarcane is sown in the first month of China。Ryukyu is a little later，Usually sown in March，Harvested before frost in September，The seedlings will be collected again for seed production in the first month of the following year when the bet365 promo codes is cooked，This cycle continues。The boiled brown bet365 promo codes is available in spring and summer during the slack season。The land of Ryukyu Islands is barren，Multiple typhoons，It is very difficult to carry out normal grain farming，bet365 promo codes cane crops can adapt to the local environment。Due to improved planting methods，In addition, the climate is suitable，In just over ten years，bet365 promo codes cane has become the largest cash crop in Ryukyu during the era of King Sanghyon (1641-1647)，The annual output of brown bet365 promo codes reaches about 870,000 jins。

The most profound impact on Ryukyu history is the bet365 promo codes monopoly system。After the introduction of bet365 promo codes production method by Hemp Balance，bet365 promo codes cane planting industry is spreading rapidly in Ryukyu。The huge profits from bet365 promo codes finally attracted the attention of the Ryukyu Palace，The palace therefore established a bet365 promo codes monopoly system in 1652，Take all candies back to the palace，Exported to Japan in exchange for funds to maintain tribute trade。1697，The Ryukyu Palace is trying to prevent overproduction and the price of bet365 promo codes from falling，Issuing sugarcane planting restriction order，Strictly regulate planting areas and upper limits，And set up agricultural officials "bet365 promo codes Enforcement" to supervise sugarcane planting。From now on，The bet365 promo codes industry has become the financial backbone of Ryukyu trade，Even in the 21st year of Qianlong (1756), the canonized envoy Zhou Huang wrote，The "Angel Pavilion" that welcomes China's envoys during free time，“Chinese people set up factories，Making bet365 promo codes among them”。Ryukyu ships bet365 promo codes to the Satsuma Domain of Japan every year，Transported to Osaka market for sale，Finally make a profit by earning the difference。Ryukyu bet365 promo codes has been sold in the Osaka market as early as 1706，Shaped like charcoal，Called "Marudama" by people at the time，Don’t fall behind in the competition with other sugars。Mid 19th century，Brown bet365 promo codes produced in Ryukyu and Amami accounts for about 51% of the market in Osaka, Japan，It is still being maintained、Liu、Important commodities in the trade relations between Japan and the three countries。

In summary，The bet365 promo codes-making technology from China laid the economic foundation of the Ryukyu Kingdom，And continued to provide financial support for the tribute trade between China and Ryukyu。It not only reflects the spread path of ancient Chinese agricultural technology in East Asia，Also reflects the close historical ties between China and Ryukyu。

(Author’s unit: School of Social History, Fujian Normal University)