In Yunnan,most minority nationalities had a custom of keeping record of events by notching wed,which was wed to keep a record of days and number or wood on letters,notice and taker of marriage or wood to keep a record of important events.

A New Discussion about the Relationship of Jiandi and King Qi Primogenitor of Shang People;

King Qi lived the period of Yushun and Dayu when monogamy was prevailing,the marriage system of Shang′s people was also monogamy in King Qi′s period.

On the moment and reason of Bailin Meditation Temple;