In Chinese literary tradition, the snake symbolizes renewal, longevity and health, with the shedding of its skin seen as a powerful symbol of rebirth and rejuvenation.
The snake comes sixth in the 12-animal rotation used by the Chinese to represent the year, following the loong and preceding the horse. Others in the zodiac include rat, ox, tiger, rabbit, sheep/goat, ...
The Bible details how God’s enemy, Satan, took the form of a serpent. He tempted Eve, then Adam, to eat the forbidden fruit with a false promise of getting even more than God had already given them.