It's a sloppy Chinese knockoff of Soviet's story of Alexander Matrosov, who died in 1943 by initiating this kind of soviet-style kamikaze attack. According to soviet propaganda, there were 400+ such Matrosov attacks during the entire WW2 (Russo-German War). Many Chinese propaganda reporters in the Korean war battle grounds were trained in Soviets. They were writing zombie movie scripts based on soviet stories.