Bo Junyan was ten years older than Gu Chenyi. From the time Gu Chenyi was born until he was thirteen, they had been living with Bo Junyan's family. Gu Chenyi had followed Bo Junyan since he was young. The relationship between the uncle and nephew was especially deep. Bo Junyan, who was such a ruthless person, had repeatedly given Gu Chenyi a chance. As long as he did not cross that line and as long as he turned back to the shore, he would still be his nephew.
Then there's Gu Chenyi.
Before Mu Huan married Bo Junyan, this uncle of his was the person he idolized the most. He listened to Bo Junyan more than he listened to his father. Even if he felt that Mu Huan should be his, Mu Huan had broken up with him more than three years ago and had been his aunt-in-law all this time.
This… was etched deeply in his subconscious. Mu Huan was his aunt.
Furthermore…