Prince Bastard's Parenting Book

The fierce warrior-prince Yan Xi ruthlessly crushed a neighboring kingdom and brought back the kingdom's young princess Tao Xiaowei. The cute five-year-old princess ran around the palace and forced Yan Xi to care for someone for the first time. After many years of war and conquest, Yan Xi finally returned home and found that the little princess girl had grown into a peerless beauty. Ever since then, Yan Xi has had eyes for no one else. He will fight off her suitors like he destroys enemy kingdoms.

(Source: Tencent, translated)