A few historical notes on the PLA;
1 - The PLA were poised to assault Taiwan in 1950. With the US-led UN intervention in Korea and the massing of troops on the China-Korea border those troops were converted from invasion formations to coastal defence formations.
2 - The troops used in Korea were in a large part former Nationalist troops 'cleansing their honour' (ie: dying to avoid reprisals to their families and home regions). This is important because the methods used by the PLA in Korea were an aberration; they actively wanted a high death rate in their own troops. Many troops used in the Chosin action
were not issued shoes.
Attempting to use these 'human wave' attacks as a standard Chinese tactic is wrong and I kinda wish people would stop it when I see it in faction