Ma Yize

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Ma Yize
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Date of death: 

The Ying Tian Li (Heavenly Accordance Calendar) prevalent in the early Song Dynasty, was influenced by a Muslim scholar named Ma Yize. Ma Yize is said to have lived through the years 921 - 1005 CE. In this book he introduced a system of seven days a week, and thus laid a foundation for the conversion between the Chinese and Islamic calendars.

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