Lin Ning was Ji Nanfeng's personal bodyguard, trained from childhood as an assassin, which was why Fu Shinian could request someone like him. If it were anyone else, Ji Nanfeng probably wouldn't have cared and might have even slapped them.
Placing Lin Ning by Su Mu's side was ostensibly as her assistant, but in reality, he was always protecting her. Although nothing significant had occurred in the past three years, having Lin Ning by her side made Fu Shinian feel somewhat more at ease.
Now that Ji Nanfeng had abandoned his underworld business, Lin Ning's role for Ji Nanfeng was no longer significant. Perhaps Lin Ning stayed by Su Mu's side because he was aware of this change.
It was a good thing, but it was uncertain whether Su Mu would accept her again.
After speaking with Lin Ning, Fu Shinian didn't leave. His thoughts turned to Su Shiyue upstairs, he looked up and then went upstairs.