Chinese Calendar, developed from Chinese Lunar calendar, is a perpetual calendar with daily auspicious and inauspicious events. It is said that the Yellow Emperor Calendar was created by the Yellow Emperor, thus the name Yellow Emperor Calendar. Since the Calendar mainly includes astronomy, weather, season and some taboos that people should observe in daily life and guides Chinese farmers in the farming time, it is also named Farmers' Almanac and known as ''Tong Shu'' (通书 literally "All-knowing Book") in folk China. However, ''Shu'' in Chinese is homophonic to the word ''defeated'', so the Calendar is called ''Tung Shing'' for auspicious meaning.