[OOC warning! Lots of headcanon, and the timeline isn't very strict. If you're a stickler for accuracy, this isn't for you.]
Fish × Shrimp × Lou
Zhang Moshan was a member of the main Zhang family and had the ability to foresee the future. Because using this ability required him to speak as little as possible, the clan elders named him Zhang Moshan. However, every vision took a heavy toll on his body. After his ability to foresee the future was discovered, he was taken away from his parents.
The Zhang elders believed that Zhang Haimo's blood could strengthen the Zhang family's bloodline, so they regularly drew Zhang Moshan's blood for experiments. His parents tried to stop them, but clan rules held them back. During an internal conflict in the Zhang family, they seized their chance to send Zhang Moshan away. The strain of having his blood drawn and using his precognitive ability caused his body to regress in age. Zhang Haiqi found him and named him Zhang Haiyu. Because his body had regressed, the Qilin tattoo on him never appeared.
Only after Zhang Haiyu grew up and gradually regained his memories did the tattoo and his precognitive ability emerge. When Haiyu touched her two junior disciples, she saw their futures, as well as Zhang Haiqi's. At first, Haiyu planned to do nothing, but as they spent more time together, she quietly changed her mind. Then a System claiming it could change the future came to her. What should Zhang Haiyu do...?
It can be good-looking. I really don't praise people, but this book is really good-looking.