What was China's first complete victory against foreign invasion in modern times?

War of Resistance against Japanese Aggression's victory. War of Resistance against Japanese Aggression's victory was the first complete victory of China against foreign aggression in modern times. This great victory completely shattered the Japanese militarists' attempt to colonize and enslave China, and washed away China's national humiliation of repeated wars and defeats in modern times. This great victory has re-established China's status as a great power in the world and won the respect of peace-loving people in the world.