The first achievement is the "Taichu Calendar" that he made.

第一，就是他编制的历法《太初历》。

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This is why the calendar has been called "Taichu calendar". It is the first calendar with complete records in China's history and thus occupies an extremely important status in history.

这是我国历史上第一部有完整文字记载的历法，在历史上有着极其重要的地位。

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This is why the calendar has been called "Taichu calendar". It is the first calendar with complete records in China's history and thus occupies an extremely important status in history.

这是我国历史上第一部有完整文字记载的历法，在历史上有着极其重要的地位。

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