Travel to the Prehistoric Times and Become a Saint

Liu Qing was reborn; it was okay to become an immovable willow tree, but why was he reborn into the prehistoric period or the critical period of the dragon and phoenix calamity? Fortunately, the system was turned on at the critical moment. Let's see how I can become a saint while watching the show and eating. No matter what the calamity of dragons and phoenixes, the calamity of lich, or the calamity of Journey to the West, you can only live long if you survive until the end. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.