Question

China was under which Colonial rule​

Answer 1

Answer:

During the 18th century, merchants from Western Europe came to China in increasing numbers. However, merchants were confined to Guangzhou and the Portuguese colony of Macau, as they had been since the 16th century. ... In 1839, China found itself fighting the First Opium War with Britain.

China was arguably "colonized" by the Mongols and Manchus per T.E.D's answer, but succeeded in assimilating those conquerors. The differences between China and Westerners stood in the way of a similar thing happening between China and the British, or even China and the Japanese (who were "westernized" Asians).

Answer 2

China is not under any colonial rule..