Kaiyun Peasant Calendar refers to ancient books and extracts the red paper books of various major date selection halls to provide the most accurate lunar calendar-perpetual calendar content.
Kaiyun Farmer Calendar provides four major functions　
1. Lunar calendar: Contains daily solar terms, festivals, reminders, taboos, rushes, auspicious gods, fierce gods, five elements, Pengzu Baiji, fetal gods, and time of good and bad.