The dividing line between the Yellow Sea and the Bohai Sea?

The connection between the Laotieshan Cape at the southern tip of Liaodong Peninsula and the Penglai Cape on the northern shore of Shandong Peninsula is the dividing line between Bohai Sea and Yellow Sea.

By the way, the connecting line between Qidong corner on the north bank of the Yangtze River estuary and the southwest corner of Jeju Island in South Korea is the dividing line between the Yellow Sea and the East China Sea. When it comes to 32 degrees north latitude, the East China Sea and the South China Sea are the center lines of the Taiwan Province Strait. The dividing line between the East China Sea and the South China Sea is the connecting line between Nan 'ao Island in Guangdong and the southern end of Taiwan Province Island. If you don't need to be so precise, you can also remember an approximate location: the boundary between the Bohai Sea and the Yellow Sea-the connecting line between Liaodong Peninsula and the top of Shandong Peninsula. The dividing line between the Yellow Sea and the East China Sea is the north bank of the Yangtze River estuary. The dividing line between the East China Sea and the South China Sea is the connecting line between the southern tip of Taiwan Province Island and the junction of Fujian and Guangdong provinces. Taiwan Province Province belongs to the East China Sea.