If by the world you mean the west (do you see the countries in Africa or the Middle East caring about this?) then only when China actually attacks western inter

If by the world you mean the west (do you see the countries in Africa or the Middle East caring about this?) then only when China actually attacks western interests, namely allied democracies like Japan, South Korea, and Taiwan. Note that the Allies in WW2 didn't go to war against the Axis supremacists until they expanded outside their borders, and the western allies didn't take significant action against Japan until Japan expanded into the west's Asian colonies. The Nanjing massacre was December 1937. The US oil embargo on Japan began summer 1941. Why did it take 4 years after a humanitarian crisis? Because Japan began occupying French Indochina in summer 1941 after France fell to Nazi German in summer 1940, and only after Japan started occupying western interests did it draw the full attention of the western Allies.