Introduction to Tingzilan Fort: Tingzilan Fort is located on the north bank of Langya Port in front of Langya Tower. It was built during the Yongzheng period of the Qing Dynasty. It is one of the three ancient forts in Jiaonan City and an important coastal defense military facility in ancient times. The ancients set up forts here, which shows the important military status of Langyatai and Langyagang in ancient times.