Guerrilla warfare is what the PLA knows best. In Vietnam, even against the French, the same French that Ho INVITED back in with the Ho-Sainteny Agreement, whenever Giap decided to conduct conventional warfare, aka 'set piece' battles, Giap lost his @$$. If guerrilla warfare is so efficient against conventional warfare and forces, then why did Giap bothered to try conventional warfare tactics against French forces, the 1968 Tet Offensive, and the 1972 Easter Offensive? All of them Giap lost. And for 1972 Easter Offensive, Giap lost against SVN forces because the US was beginning to withdraw from SE Asia.
Dude, I can't answer your questions because I have never researched into French Indochina. It goes to show how insignificant that region is to the world. I'm as ignorant as white Americans on the Vietnam War, so don't get all emo on me.