Question

Why did the ruler of the Mongol Empire decide to adopt certain Chinese customs?

He wanted the Chinese people to live among the Mongols, so he bridged the two cultures.
He believed that Chinese customs were superior to those of the Mongolian people, so he adopted them.
He thought that Chinese customs could help the Mongols conquer other parts of Asia, so he changed tactics.
He understood that Mongolian customs might not be accepted in China, so he made compromises.