Let's say the European powers and Japan just go along with "WTF let's conquer it because we can!!!" attitude toward China, sometime in 1890s, which was aided by the fact that there is a bigger and more devastating ATL civil war in Qing Dynasty several years before. The British get provinces around Yangtze river, the Germans get provinces around Shandong peninsula, and the French get Guangzhou and other southern provinces. The control of Manchuria is disputed by Russia (who get Mongolia and Xinjiang) and Japan (who get Korea and Taiwan), but it then agreed by both that Manchuria will become de facto independent, Russian protectorate with some Japanese influence. The other notable independent state is Tibet (British protectorate). So...China is cease to exist, its provinces become various European and Japanese colonies/protectorates...what next?