Introduction to ancient watchtowers: Watchtowers began to develop and become popular in the Qiang area as early as the Han Dynasty. It is said that there were nearly 10,000 watchtowers in their heyday. Regarding the Diaolou, there is also a magical legend about people and monsters that absorb the souls of boys. After the Wenchuan Earthquake, 45 ancient watchtowers in the group were seriously damaged, with their bodies cracking and their roofs collapsing.