The Grave Robbers' Chronicles: The Little Flower Raised by Master Hei Himself

[Dual male leads, Hei Hua pairing, happy ending, a proud and pampered young master × a carefree, down-on-his-luck young prince. Character inspiration comes from the comment by @Haitang Y Yutangciwang Baby.] Xie Yuhua was orphaned at the age of five and taken to the Xie family’s ancestral home to be raised as its future head. But one night, just a month later, he was ambushed. A man wearing sunglasses appeared out of nowhere, slaughtered every assassin, and left him a dagger. “If you want to survive, you have to grow stronger.” Clutching the dagger, he passed out. When he opened his eyes again, he had somehow arrived in 1933. At the time, his master, Er Yuehong, was still young, and his grandfather, Ninth Master Xie, was not yet old. There was also a cocky ten-year-old boy who followed him around all day. He loved to tease him, but whenever danger struck, he always shielded him. He said his name was Qi Yanci. Later… they were separated. He changed his name to Hei Xiazi. He waited for him for fifty years…