The last time China was at war was against Viet Nam in 1979, they did not do so well. They are biding their time, waiting for the right time to engage Taiwan. Two factors, the US, and resultant international fallout. They cannot risk loss of their export economy. Tough decision, look for them to make the wrong move.
I dont see that in such a war there is going to be much use for the Chinese army, other than maybe as occupation forces. This is going to be an air-naval conflict entirely.