In the battle of Wangjing (Kaesong) that broke out in January of the 22nd year of Zhizheng, Goryeo gathered 200,000 troops to besiege the Western Route Army of the Northern Expeditionary Army of the Dragon and Phoenix Red Turban Army that occupied Wangjing.
In April of the same year, the Yuan army attacked Liaoyang on a large scale, defeated the remnants of the Red Turban army whose morale had not yet recovered, captured and beheaded Pan (whose real name was Pan Cheng), and recovered Liaoyang. Broken head Pan general Zuo Li led the rest of the troops to break out, wandering around, to the spring of the twenty-third year of Zhizheng, there are still remnants of the Red Turban Army in the middle of the cavalry more than 10,000 people, under the leadership of the only remaining general Zuo Li to the west, and again attack the Yuan capital Kaiping (had been burned by the Western Route Army), here encountered the Yuan Fierce General Polo Timur, and was defeated by the Polo Timur army, the desperate Zuo Li led the rest of the surrender to Polo, this force turned to the outside of the Saiwai, Goryeo, and stirred up the bloody storm of the legendary Red Turban Army to completely withdraw from the historical stage.
Seven years after the Northern Expedition of the Dragon and Phoenix was defeated by the army of Goryeo, Zhu Yuanzhang ascended the throne as emperor in Yingtianfu (now Nanjing), established the Ming Dynasty, and changed the Yuan to Hongwu. In the same year, Ming Taizu sent envoys to Goryeo to inform the Central Plains of the change of ownership and the new country name and era name, in an attempt to replace the Yuan Dynasty's suzerainty status over Goryeo in order to coerce the king of Goryeo to pay tribute. Because the general trend of the Yuan Dynasty has gone, Emperor Tuhuan Timur of Yuan Shun has led the princes and ministers and concubines to flee from the capital and escape to the north of the desert, sandwiched between the big countries (China and Japan) and secretly born in the small country of Goryeo, not only can not be at ease, but also can only see the wind and rudder, down the slope of the donkey, accepted the canonization of the Ming Dynasty, and nominally accepted the suzerainty of the Ming Dynasty. In fact, the lord of Goryeo is still disconnected from the Yuan royal family who fled the desert, and secretly communicates with the song.
The royal family of the Mong Yuan Son Jin clan intermarried with the Goryeo royal family for generations, and the relationship with the Goryeo kingdom was very deep through marriage. In this way, another 7 years, that is, the 7th year of Hongwu in the Ming Dynasty (1368), the Goryeo lord Wang Yuan, who was overwhelmed by the wave of opposition one after another, died in a murder by his subordinates, and finally was completely freed.
The remnant Yuan forces who fled to Mobei were unwilling to lose their suzerainty over Goryeo, and took advantage of the civil strife in Goryeo to plot to usurp the throne of Goryeo, and wanted to support the descendants of the Yuan Shen King Miao to become the lord of Goryeo, and sent troops to secretly infiltrate the northern part of the Korean Peninsula disguised as Goryeo, preparing to assist the local pro-Mongolian forces in an armed rebellion to seize the throne of Goryeo.
（铁马首发，严禁搬运、剽窃）
In the history, after learning that the king of Goryeo was killed by his subordinates, the small court of the Northern Yuan Dynasty, which fled to the outside of the Saiwai, immediately sent Bodu Timur and Yushan Buhua as envoys to Goryeo, inciting the pro-Mongolian forces of Goryeo to contribute money and people to support the great cause of the restoration of the remnant Yuan, so the murder of the pro-Ming Wang Yuan, the Northern Yuan was suspected of being involved, perhaps behind the scenes. After the death of King Gongchou, the Ming Dynasty sent envoys to Goryeo to mourn as the suzerain, and the envoys of the Ming Dynasty were attacked and killed on the way back from the sacrifice, and then the pro-Mongolian forces of Goryeo were impatient to support the adopted son of King Gongchou, the 10-year-old heir of Jiang Ningjun Xinyu, which greatly angered Zhu Yuanzhang, the Taizu of the Ming Dynasty, and he refused to recognize the new king, and even the title of the deceased Wang Yuan's "King Gongchou" was abolished. The relationship between the two sides quickly turned from hot to cold, and the new king and nobles of Goryeo turned to the Northern Yuan to ask for the title, and the overjoyed Northern Yuan small court immediately named Xinyu the king of Goryeo and the throne of the left prime minister of the eastern province, as if restoring the status of the suzerain.
Goryeo "God of War" Lee Sung-gye
After the establishment of the first merit in the battle of Wangjing, the original Goryeo Wanhu Li Chenggui continued to lead the army to fight, and after repelling the Red Turban Yu Party, he also resisted Meng Yuan several times, and repeatedly performed miraculous feats, becoming a very legendary hero: he once led his troops to repel the prime minister of Liaoyang Province of the Yuan Dynasty, In 1370, he led 15,000 cavalry to cross the Yalu River from the northeast to attack Dongning Province, and defeated Li Wulu Timur, the Tongzhi of Dongning Province of the Northern Yuan Dynasty, and expelled the Northern Yuan forces in one fell swoop and recovered Dongning Province. History:
In 1377, Yi Sung-gye became famous for annihilating the Japanese Japanese invaders who invaded Goryeo at Jirisan Mountain, and in August of the same year, he destroyed the Japanese in the area of Sekaido (Hwanghae-do). In 1380, the Japanese invaded Unbong (present-day Namwon-gun, Jeollabuk-do, Korea) with 500 ships and captured the Yeongwol-yi, defeating the Goryeo army and killing the local general. Li Chenggui was appointed commander-in-chief to lead the army to defeat the Japanese leader Ajibatu in the "Battle of Barren Mountain", killing countless enemies.
In 1382 AD, the Ming Dynasty ordered the Northern Yuan Dynasty to descend Hu Badu to the Eastern Jurchen region and appease the local Jurchens (Manchus). In August of the following year, Hu Batu led his troops to Duanzhou, the Jurchen leader Jin Tong Buhua surrendered, and Goryeo ordered his general Li Chenggui to lead his troops to attack, and the two sides fought in Jizhou, the Jurchen and Northern Yuan armies suffered heavy casualties, and the rest of the troops were defeated.
Li Chenggui was brave and strategic, brave and good at fighting, and even the Northern Yuan warlord Nahachu, where he died, praised him from the bottom of his heart:
"(Cheng Gui) is a young soldier like a god, a true genius, and he will be in charge of great things in the country"!
In the twenty-first year of Hongwu in the Ming Dynasty (1388 AD), the new king of Goryeo, Xinyu, suddenly had a whimsical idea and was ready to send troops south to attack the Ming Dynasty that was in its heyday. Xin Yu also ordered the restoration of Meng Yuan's clothes and crown and broke off relations with the Ming Dynasty.
Yi Sung-gye founded the Joseon Dynasty of the Lee family
Li Chenggui, who was brave and good at fighting, still had a relatively clear understanding of the comparison of the strength of the two sides, and vigorously opposed this desperate military adventure. But Xin Yu rejected his proposal and insisted on sending troops to attack Ming. Taking advantage of his great prestige in the Goryeo army, Yi Sung-gye led his army back to Wangjing, deposed Xinyu, and appointed his son Xinchang as the lord of Goryeo. Not long after, Li Chenggui deposed and exiled him to Ganghwa Island on the grounds that Xin Chang was not of the blood of the Goryeo royal family (Xin Yu was the adopted son of Wang Yuan), and that he could not be the king of Goryeo unless he was Zhengsu, and renamed Wang Yao, the seventh grandson of Goryeo Shenzong, as the new king. He himself took the opportunity to seize the real power of the military and government of Goryeo, became the de facto ruler, and carefully pursued and maintained a pro-Ming policy.
In 1391, at the age of 58, Yi Sung-gye finally ascended the throne and became the rightful supreme ruler of the Goryeo Dynasty, changing the name of the country to "Joseon". Founded by Yi Sung-gye, the Joseon Dynasty of the Yi dynasty lasted for 500 years and witnessed the rise and fall of the Ming dynasty and later the Manchu dynasty, as well as the whole of Northeast Asia.
(The picture comes from the Internet)