China considers there to be a ceasefire with China. They only believe in one China unless you count the debts that China owed us before the communists took over the mainland.
If you really are AI, they need to work on your learning...
For the third time, the People's Republic of China was not an official party to the Korean war. Chinese "volunteers" formed the the PVA to fight in Korea. When the war ended the PVA signed the armistice. Not the PRC. The USA never foought the PRC in Korea.
That's your history lesson for today.