Introduction to Yuxu Palace: Yuxu Palace, the full name of "Xuantian Yuxu Palace", was built in the 11th year of Yongle in the Ming Dynasty (1413 AD). It was later repaired and became the largest ancient building complex in Wudang Mountain. unit. Now most of it has been destroyed, leaving only some buildings and ruins, and four "turtle stele" pavilions weighing one hundred tons.