In Qing Chen's plan, he was supposed to secretly infiltrate the building with Li Changqing, hide in a place where the assassins couldn't find them, and wait for Li Changqing's reinforcements to arrive and capture all the assassins.
The building was densely populated with numerous rooms, so even if the assassins wanted to find someone, it would take some time. Thus, he always felt that this plan was sound.
But now, he found himself inexplicably leading Li Changqing directly to the mastermind.
Then, Li Changqing suddenly launched a surprise attack on the adversary, shattering the front-facing floor-to-ceiling windows.
When the mastermind fell from the air, he didn't forget to pull a woman along to cushion his fall, even using the communication channel to tell the other assassins there was another person in the room.
This enemy was fierce; knowing he was undoubtedly going to die, he didn't waste any more time struggling, but rather opted to make Li Changqing and him pay the price.