In February 645 (the 19th year of Zhenguan), Emperor Taizong took Koguryo as the regent and abused the people, so he led the Sixth Army to attack Koguryo from Luoyang. However, after crossing the Liao River eastward, due to Goguryeo's tenacious resistance, Tang Jun could not capture Anshi City (now Yingchengzi, Haicheng South, Liaoning Province) for a long time. In addition, the climate turned cold, and the grass withered and the grain could not be reached. It was difficult for the army to stay long, so we had to send a letter to adjust the troops. After that, Emperor Taizong's attack on Koguryo only stayed in some small-scale raids.
Dear, I still hope to adopt it if you are satisfied, O(∩_∩)O Thank you.