Book of Immortals

In this world, there are Buddhism, Taoism, Confucianism, Demon Sect... Shi Xiaotian was originally just an inconspicuous little beggar in this muddy world. By chance, he joined Yunlongmen, the first sect of the righteous path, and became the only disciple of Yao Lao, one of the three four elders. But due to an accident, the foundation was completely destroyed...