Did Tang Ruowang invent the lunar calendar?

1, Tang Ruowang didn't invent the lunar calendar. It should be said that it is inappropriate to say that Tang Ruowang "invented" the current lunar calendar. It is better to use "reform" or "improvement".

2. Tang Ruowang (1592-1666), German, Jesuit missionary of the Holy Roman Empire, Catholic Jesuit friar, priest and scholar. I have lived in China for 47 years, through the Ming and Qing Dynasties. After his death, he was buried on the left side of Matteo Ricci's tomb in Beijing, and the Kangxi Dynasty named him "Doctor Guanglu", ranking first. There is a former residence in Cologne with statues. There is a lot of information about him in the Italian Jesuit archives.

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