Why did Wendi go to Tang Gaozong to play Koguryo Tiger?

1. First of all, Koguryo is not North Korea. Don't make mistakes. Koguryo is a country with many people. The great cause of Koguryo's territory is equivalent to the territory of the Qing Dynasty during the confrontation between Ming and Qing Dynasties. In other words, without the talents of Wendi and Tang Gaozong, the history of China might be different.

2. Goguryeo's territory extends from Shanhaiguan to the Korean Peninsula, that is to say, Goguryeo is already a regional power, and even the second (agricultural) power in East Asia during the Sui and Tang Dynasties. Its armor is 1.5 million. If such a country does not fight now, it will definitely be a disaster for future generations.

3. Culturally, Koguryo did not accept Confucian culture, which is different from later Korea. On the contrary, it is deeply influenced by foreign cultures in the northwest.

Goguryeo poses a direct threat to China. In the 6th century, Koguryo rose in Northeast Asia, and neighboring countries surrendered one after another. Uighur and other nomadic tribes have always been used by them, and even the powerful Turkic khanate has formed an alliance with Goguryeo, constantly invading the northern border of China.