Time Travel Is Actually the King of Beasts

In this world, there are Confucianism, Taoism, demons, ghosts, beasts, chivalrous men, and sorcerers. Li Changan, a good young man in the 21st century, woke up and found himself in a dark cave, and he answered the old Northeastern saying - you are a tiger! Li Changan shook his head and said: "I am a tiger!" … Due to some special reasons (no money) and some practical reasons (handicap), I will temporarily use the cover provided by the system (by the way, I want to complain, it's so ugly!) And I will change it later.