The Pearl Castle Scenic Area is located within the jurisdiction of Lemian and Hetou towns. Starting from the estuary of Lemian River in the north to Shuangcun near Hetou in the south, and from Shuangcun of Hetou in the east to the coast west of Dunwen in the west, it is mainly distributed along the mainstream of Lemian River. The Pearl Castle Scenic Area includes Anbu, Chen Ties, Haishan, Yu Village, and Dunwen of Lemian. It covers an area of about 46.23 square kilometers. Commerce in this area was developed in ancient times, and cultural relics are relatively abundant. The main attractions of the Pearl Castle Scenic Area include Lemian Castle (Pearl Castle), Wenming Academy, Haiyan Pavilion, Anbu Catholic Church, the old site of Lemian Uprising, and the memorial pavilion of Huang Xuezeng's former residence, etc.