Sign-In System of Tang Dynasty

Yang Yufeng, a young man in the 21st century, accidentally traveled to the fifth year of Wude in the Tang Dynasty due to the use of a low-quality game hard drive. He was bound to the sign-in system and used knowledge to improve his life. With the help of the system, he gradually influenced the history. When I looked back, I realized that I had unknowingly formed the first aristocratic family in the Tang Dynasty! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.