For them, the most dreaded thing is to be bitten by the dog they raised, and once that dog has another master, that signals the crisis is about to strike.
The Chu Family had reason to suspect that Qi Nian Hall was feigning allegiance to them with some other motive, perhaps to let the real master behind them take their place, by which time the entire Chu Family wouldn't even know how they died.
Although Nie Fan had agreed, he still asked, "Mr. Li, do you really intend to confront Qi Nian Hall in this manner?"
Li Fei nodded without hesitation and said, "Qi Nian Hall is so arrogant now, so to deal with them, we need some unusual methods. Since they've chosen their path, I have never been one to hold back."