This boy's name is Cheng Lichuan, he's Gu Jiahui's aunt's son.
When Gu Jiahui was young, his parents were very busy with work, and they didn't feel comfortable leaving him alone with the servants and nanny, so they often sent him to his aunt's place.
He spent half of each year at his aunt's house.
Their house was in the suburbs, and Cheng Lichuan got into a university here, which was far from home, about an hour and a half by car, but very close to Gu Jiahui's apartment.
Gu Jiahui was close to his cousin since they were little, like real brothers who shared everything. He let his cousin stay here so that they could sometimes drink and chat together.
Cheng Lichuan could cook all kinds of dishes. During past winter and summer vacations when both parents were busy, he was the one who took care of Gu Jiahui's meals and drinks.
He quickly made fried rice with eggs and lettuce in oyster sauce and brought it to the table.
