What contribution did Xu Guangqi, a scientist in Ming Dynasty?

Xu Guangqi devoted his life to the study of mathematics, astronomy, calendar, water conservancy and other aspects, and wrote a lot, especially agronomy, and translated books such as Geometry Elements, Taixi Water Law, and Encyclopedia of Agricultural Administration. At the same time, he is also a pioneer in communicating Chinese and western cultures. It has made important contributions to the cultural exchange between China and the West in the17th century.

1, calendar revision

2. Compilation of Chongzhen Almanac

3. Mathematical application

4. Translating geometric elements

5. Advocate the introduction of sweet potato in agriculture.

6. Write an encyclopedia of agricultural management.

7. Training and making guns

8. Write rules and codes