Who was the first scientist to put forward China's "Twelve Calendars"?

China first proposed that the scientist who started the "Twelve Calendars" in beginning of spring was Shen Kuo ~

Shen Kuo's new calendar "Twelve Years Calendar": solar calendar, no leap month; The moon is not determined by its first sight, but by the solar terms. It is to divide the year into 12 gas and cancel 65438+ February. "Take beginning of spring as one of the days of Meng Chun (the first month) and surprise as one of the days of mid-spring (February), ending on the 31st (the big month) and ending on the 30th (the small month). All the years are spent together without any leap."