Why did Jin Jin, as the Crown Prince, have a great influence on the political structure of the Yuan Dynasty?

In the fourth year of Yuan Shizu's return to China (126), Zhen Jin was appointed secretary of the Central Committee and was sentenced to the Privy Council. In February of the 10th year of Yuan Shizu Zhiyuan (1273), Zhenjin was made Crown Prince by Kublai Khan. Because Zhen Jin studied with Han Confucian scholars since childhood, he respected Confucianism more when he grew up and was deeply supported by Han Confucian scholars. At that time, Kublai Khan reused Ahema, a China native who was good at collecting money, and the forces of the two factions in the DPRK, China and plummeted. Real Jin, who believed in Confucianism, was named Crown Prince, which objectively reversed this unbalanced power balance and had a great influence on the political structure of the Yuan Dynasty.