Sutra version introduction: Qingyang Palace contains a sutra version of the "Tao Zang Ji Yao" engraved in the 32nd year of Guangxu's reign (1906) in the Qing Dynasty. There are more than 13,000 pieces in total, all carved from pear wood. Each piece is carved on both sides, with clear layout and neat handwriting. It is the most complete preservation board of Taoist classics in my country today and is an extremely precious Taoist historical relic.