This scene was something Luo Chao had planned in advance. He had long since made the little snake hide in his clothes, intending to restrain Charlemagne, then have the little snake deliver a fatal blow.
The little snake did not disappoint him, understanding his intention, quietly hidden in the clothes. Just when Luo Chao entangled Charlemagne, it shot out like lightning, accurately burrowing into Charlemagne's mouth.
Luo Chao released him, as there was nothing more he needed to do. Since the little snake had already entered his stomach, Charlemagne had no chance of survival whatsoever.