A Discussion of the Astronomy Calender of the Bulang Nationality

The Bulang nationality uses Dai Calender (also called Zuge Calendar), which is according to the calender months and the change of creatures and climate to guide the production of crops, and the system of seven days is used as a circle to record time and give the name of each day in the circle.Such situation may have continued only a litt le more than two hundred years, As the absence of writ ten record, the calender the Bulang nationality used before such time had been forgotten.But the drawing on cliffs made by their ancestors and the tales handed down by oral show that their ancestors worshipped both the sun and the moon, which had the same importance to them.According to this at that time they must have been using the creature and climate calendar formed at the beginning time that the solar calendar and lunar calendar merged together.And such calendar should have the same contents as the lunisolar calendar of the Wa nationality.