China News Service, Shanwei, May 29 (Reporter Cai Minjie) In the waters of Jieshi Bay in Shanwei, Guangdong, two huge hexagonal steel cages float quietly on the blue sea. 它们就像海上堡垒。 The capacity of a single breeding water body is close to 20,000 cubic meters. This is an exclusive "sea view room" and activity space for fish.