1, Bohai Sea: Liaoning, Hebei, Shandong provinces and Tianjin

2, Yellow Sea: Shandong and Jiangsu provinces.

3. East China Sea:Jiangsu, Zhejiang, Fujian and Taiwan provinces and Shanghai Municipality

4. South China Sea:Fujian, Guangdong, Taiwan and Hainan provinces, Hong Kong and Macao Special Administrative Regions, and Guangxi Zhuang Autonomous Region

Look at the map