After Traveling Through Time, He Accidentally Became a Traitor

After a young man traveled through time, he originally wanted to abstain from sex and cultivate immortality. However, the fate was shallow. The temptations of all things in the world are constant. Whether he will sink or rise, let's see how the protagonist overcomes all kinds of disasters... There is a single female protagonist (Chu Xuan'er is his master). The process has some unexpected ups and downs. The plot is slow-burning. I hope everyone will be patient to read it.