Why did so many Han people defect to the Mongols in the late Song Dynasty?

Will you die less if you don’t resist? Do you think it was an internal conflict within the nation during the Warring States Period? Mongolia made it clear that they wanted to exterminate the entire nation. It was because a Han minister made a calculation for the Mongolian ruler: each Han was worth a few cents, I can’t remember exactly, but it was no more than 5 cents.

That's why the Mongolian rulers did not kill all the Han people

Due to the heroic resistance of the Chinese military and civilians for decades, the Mongolian nobles had to resort to the method of stopping genocide and brutal robbery and recruiting traitors to obtain more benefits. .In this way, the people in southern China did not suffer the tragic genocide like in Central Asia, northern China, and Sichuan. The southern region of China did not suffer the complete destruction like northern China, and maintained its past prosperity to a certain extent. The fact that China was not completely destroyed by Mongolia is a credit to the heroic resistance of the Chinese people, not the mercy and soft-heartedness of the Mongolian bandits.