Greece.
China has stuck to it's own region throughout much of it's time. The only occasion would be under Genghis and Kublai Khan, and then near the end of the Qing Dynasty.
The Modern World is the western World, and the western world brought us to the Americas.
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I also tend to think, that between China, and India, India had the more influence between them. Being that India had relations with Persia, Egypt, and Greece. Giving a lot of Influence, mainly in Persia.
While the same is also true with India and China. When Buddhism swept China, a lot changed, and India was the middle factor between Greece, and China.