It took hundreds of years to figure it out The northeast minority birds and barbarians pay tribute, take a boat south along the west bank of Liaodong Bay, sail west to the north bank of Bohai Sea, and finally enter the river. Jieshi Mountain is at the mouth of the river. In the twelfth year of Jian 'an, that is, in 207 AD, Cao Cao marched north to Wu Huan, destroying the last remnant of Yuan Shao. On the way back to Korea, Banshi climbed Jieshi Mountain and was moved by what he saw.
Cao Cao, who won a great victory in the battle of Guandu, led his army to continue northward to pursue the remnants of yuan brothers. In May, he swore the Northern Expedition, and in July, he left Lulong Village and went to Jieshi Mountain to see the sea. Facing the rough sea, he touched the scene and wrote this poem that has been handed down for ages. At that time, the war in the north subsided and the rear was safe. Only the south corner has not been solved. There are two theories about the specific location. One said that an ancient city in the southwest of Laoting, Hebei Province was used as the former site, and the mountains were in the southwest sea of this ancient city, so I was full of ambition and wrote this masterpiece "Looking at the Sea".
If Cao Cao wants to go south, he must solve the future trouble of Wu Huan. In the twelfth year of Jian 'an, Cao Cao swore the Northern Expedition, and the process was unexpectedly smooth. After defeating the main force of Wu Huan in one fell swoop, the squad returned to the DPRK and climbed the mountain to watch the sea when passing through Langya Taiwan, foolishly thinking that it was near Jiaonan, Langya Taiwan, Shandong Province. Cao Cao's soldiers, starting from Qingzhou soldiers recruiting the Yellow Scarf Army, made great achievements based on Shandong. Cao Cao's land war in the north must pass through this place, and he has his own ideas-the feeling that Qin Shihuang sealed Mount Tai and boarded Langya Taiwan has changed.