Chinese Premier Li Keqiang on Monday visited Wuhan, epicentre of the coronavirus outbreak that has killed 80 and infected more than 2,700.
China will open up its economy further, and its door to the outside will only get wider.
Jae-in said that a 2015 agreement with Japan over South Korean "comfort women" forced to work in wartime brothels was seriously flawed.
China posted better-than-expected second quarter growth on Monday, but analysts warned that the momentum will not last as authorities clamp down on rising debt.
China will "steadfastly" implement the Paris climate pact, Premier Li Keqiang said Thursday.