Acai flounder belly is a very popular food in Ximending. This is a stall-type food, but it is popular. There are full crowds queuing at any time. The most famous is the flounder belly. It has been removed from the thorny flounder belly soup. It is light but very delicious. Fresh fish belly plus heavy taste of side dishes, very suitable as a temporary hunger relief food, braised pork rice and fried onion eggs are also very delicious.