I’m assuming that this particular vehicle would be used by Chinese rocket forces but I wanted to be sure.
Proper Katyushas (BM-13s) also saw action in the Korean War, used by the Chinese People’s Volunteer Army and Korean People’s Army against the South Korean and United Nations forces.(Katyusha rocket launcher - Wikipedia) Soviet BM-13s were known to have been imported to China before the Sino-Soviet split and were operational in the People’s Liberation Army. The Viet Minh deployed them against the French Far East Expeditionary Corps during the Battle of Dien Bien Phu at the end of the First Indochina War. Id suspect thr PLA also made their owm based on the Jiefang CA-30 truck.