They are not brothers and sisters. Ye's mother died in childbirth, and his father entrusted him to Ye's father Dalian, so Ye grew up beside Ye's parents.
These two characters are from the TV series "Love Will Win", which tells the story of two entrepreneurs in Gaoye, Jinjiang who started their businesses under the wave of reform and opening up. At first, it was selling sea goods and opening clothing workshops, then clothing factories, industrial parks, and finally its own brand. They grew up step by step, from weak to strong, and witnessed the miracle brought by the 40 years of reform and opening up and the indomitable spirit of Jinjiang people.