Guangzhou locals answer questions! ! ! First, write about the Tropic of Cancer Park. Guangzhou&;s Tropic of Cancer Forest Park is located in Taiping Town, Conghua District. The park is rich in plant resources, with 73 families and 206 species of plants, of which 64 are cultivated. There is a Tropic of Cancer sign tower in the park, which is the highest and largest sign tower on the Tropic of Cancer in the world.