A large mound on the north side of the Forbidden City was built when the Forbidden City was dug up. It was a small park, but it was famous because of the story of Chongqiu's crooked neck tree. There was a Wufang Pavilion on the mountain. At the beginning, the eight-country coalition forces took away several of the bronze Buddhas, and now there is only a base. There are landmark signs on the top of the mountain in Beijing's central axis. As for the crooked neck tree, it was not the one that really self-proclaimed.