Record of Jang Bogo in the History of the Three Kingdoms.

 They're all Silla. Their hometown and ancestors are unknown. Both of them fought well, and the retirement age also did not run out of breath even if they went under the sea and dived 50 ri. Comparing the bravery and bravery, Bogo was a little short of Yeon, but Yeon called Bogo a brother. However, Bogo was always matched by age and kite by skill, so they did not try to lose each other. When the two went to the Tang Dynasty and were the heads of Munyeong-gun, there was no one to confront in running horses and writing spears. After that, Bogo returned home and told the Great King. "Looking around China, I was using our country's people as slaves. Please set up camps in Cheonghae so that pirates won't take people to the west." Cheonghae is a key point of the Silla Sea route and is now called Wando. The Great King gave Bogo 10,000 soldiers to set up a camp in Cheonghae, and after that, there was no one selling Korean people as slaves in the sea. Bogo had already risen to a precious position, but Nyeon lost her job and lived in Yeonsu-hyeon, a warrior, in hunger. One day, I told the defending general, Pung Won-gyu, "I'm going to go back to the east and hang out with Jang Bo-go," and Won-gyu said, "What's the relationship between you and Jang Bo-go?" Why did he go there and try to die at his hands?" Nyeon said, "Dying from hunger is not as pleasant as dying while fighting. Moreover, isn't it a good thing to die in your hometown?" I finally left there and met Jang Bo-ho. He enjoyed drinking with his report, but before the drinking party was over, the king was harmed and the country became dizzy, so rumors were heard that there was no king. Bogo shared 5,000 soldiers and gave them to Yeon, holding his hand and crying. "If it's not you, we can't calm down the country's anger." Yeon entered the national highway, killed the traitor, and built a king. The king called Jang Bo-bo to make him the prime minister, and made Yeon protect Cheonghae on behalf of Bo-bo.