What you want to ask is which subway to take from Hefei South Railway Station to Hefei Ocean World? Take Rail Transit Line 4 → Rail Transit Line 3.

According to Baidu map, get on the bus from Hefei South Railway Station, take Rail Transit Line 4, follow the direction of Qinglonggang, pass 8 stops, and get off at Library Station.

2. Get on the bus from the library station, transfer to Rail Transit Line 3, follow the direction of Happiness Dam, pass three stops, and get off at Exit 2 of Fan Hua Avenue Station.

3. Walk 680 meters to Hefei Sea World.