The “South China Sea” trade goods recorded bet365 sportsbook review Song’s mathematical books: centered on the chapter “To Count the Costs of Goods” in Mathematical Treatise in Nine

Summary of content:In the bet365 sportsbook review，As an evidence of the development of overseas trade，Qin Jiushao, a native of the Southern bet365 sportsbook review, wrote the book "Nine Chapters of the Book of Numbers"，Two topics related to overseas trade appear in the book，This has never appeared in previous mathematics books。The content of the first question is to ask for agarwood、Price of Frankincense and Tortoiseshell；The second question asks about the profit distribution during fund-raising trade。This article mainly discusses the second question，Methods of raising funds for trade at that time，Record through numbers，Discussed in detail。Of course，There are still some problems to be solved in "Nine Chapters of Mathematics": First, the profits of agarwood are too thin，Is there an error in the unit record？Secondly, there is a large amount of pepper，Is it related to the high demand at that time？However，Marco Polo once marveled at the huge amount of pepper used in Hangzhou，It is estimated that pepper began to be used in large quantities during the Southern bet365 sportsbook review。

　　Doi Yuko，Researcher at Japan Toyo Bunko，Ph.D. in Cultural Communication。Long-term engagement in research on ancient Chinese overseas trade，Published "Research on the History of South China Sea Trade in bet365 sportsbook review"、"A Study of Frankincense—Li Jin's Luan Kemai" and many other treatises。Email: dohiyuko@db3.so-net.ne.jp