Introduction to the Widow's Building: It has been said for centuries that the Widow's Building is a square building located in the western section of the Taipingzhai Great Wall. It is said that during the Longqing period of the Ming Dynasty, Qi Jiguang recruited sergeants from Henan to repair the towers of the Great Wall. At that time, 12 women and their husbands donated money to build this watchtower. Later generations said it was called the "Widow's Tower".