Tang Ningchuan traveled through time to become Tang San's younger brother, and got an invincible system with a sign-in. Then, check-in location: Xiao Wu's bedroom, please ask the host to go as soon as possible. Dog comparison system, Xiao Wu, that's my sister-in-law, I, Tang Ningchuan, is a gentleman, how could I do such a thing? If I don't go, I will never go. But [Ding, check-in successfully, you will get the three ancient martial souls of Douluo Continent, devouring martial souls!] [Ding, check-in successfully, you will get the God King experience card!] [Ding, check-in successfully, you will get the Emperor Yan reward!] Eight Desolation Six Heritages, all the heavens and all realms, there is no place where I, Tang Ningchuan, cannot sign in. This book is also called: Douluo: Devouring Douluo, Douluo: I really don't want to sign in there, Douluo: The strongest brother