Built during the Ming Dynasty for the ancient town of Chuansha. It was to protect the people of Chuansha from the invasion of the Japanese. The wall is not intact but some remains are still in place. Even though it is a small place, it is still interesting to walk up the wall and if you can read Chinese, there’s some history written on plaques. The scenery is pretty. Chuansha was supposedly the first town in Pudong so it is nice to learn its history.