The two Kowloon Walls in the Beijing Palace Museum and Beihai Park were built in the Qing and Qianlong Dynasties. The Kowloon Wall in Datong was originally built in front of Wang Zhugui Palace in the early Ming Dynasty, three or four hundred years earlier than the two in Beijing, and the Kowloon Wall in Datong is the largest of the three. The building structure of this wall is made of yellow, green, blue, purple, black, white and other colored glazed components. It is magnificent. We must have a look and take a picture for about half an hour. This Datong Kowloon Wall is free of tickets. Shanxi's scenic spots are really conscience. Most other scenic spots are free of tickets for people over 60 years old. Unlike the neighboring Shaanxi, most scenic spots are full of tickets for people over 60 years old.