Become Invincible from a Snake

The 'steel battleship' descended on the ancient world, the six realms collapsed, the gods fell, and the gears of time stopped running. Ye Fei, the supreme genius of the generation, traveled upstream from the end of time and brought "technological civilization" to the Kyushu continent 10,000 years ago. By some mistake, it became a snake raised by Li Anlan, the saint of the Xianxian Sect? It's just that he became a snake, but he was still the legendary Ten Thousand Treasure Snake. Can one bite increase your life span by a hundred years? Can you break through a big realm with just one bite? Can one bite of it keep you young forever? What should he do if he is surrounded by humans staring at him with tears streaming from their lips?