The Four Killers are the four guards by Prince Yexuan's side, specifically tasked with handling dangerous matters.
They are called the Four Killers because when they carry out their missions, they strike decisively.
There's absolutely no pity for criminals in their treatment.
Once the order to eliminate someone is issued, as long as they find Fu Ning first, it's likely that the only thing waiting for Fu Ning is a dead end.
Leng Ji originally wanted to urge the Prince to reconsider, but the Prince's orders, once given, were not likely to change easily.
Instead of persuading him, it would be better to act quickly and find Fu Ning before the Four Killers do.
He didn't believe that Fu Ning would truly betray Chu Qianli, nor did he believe that Fu Ning would attempt to assassinate her.
There must be some misunderstanding.
And what exactly is going on with the Empress? Bringing up her grievances at every opportunity, and then... shedding tears?