Start with the Demon God Tree

This is a dark and strange world, where there are demon trees standing in the highlands and flowers blooming on the banks of the Forgotten River. Demons are raging and evil spirits are rampant. Chen Shao, known as "Chen Laizi", because his grandfather was a Taoist priest, he had practiced some simple techniques since he was a child, and he was quite famous in the countryside for treating diseases and exorcising evil spirits. However, the arrival of the 'best sign-in system' changed Chen Shao's peaceful life. … "Ding, sign in under the Demon God Tree, reward: a drop of ancient demon dragon blood." "Ding, sign in in front of the mountain temple, reward: Dominator-level skill: "Ghost Dragon Overlord Body Technique"." "Ding, sign in the golden dragon coffin, reward: Devouring Magic Jar!"