It was the person who had entered the restroom with Cheng Weiguo. Cheng Weiguo didn't wait for Cheng Weiwan to respond and said, "The person inside is about to come out. Hurry up and leave!"
Cheng Weiwan didn't move.
The sound of running water stopped in the restroom and there was the sound of footsteps.
Cheng Weiguo lowered his voice and exclaimed, "Leave!"
He noticed that Cheng Weiwan wasn't moving, so he gave Cheng Weiwan a vicious glare. Then he brushed past her, walked out of the library, and stood outside to wait.
The second after Cheng Weiguo disappeared out the library doors, the person he was waiting for emerged from the restroom.
That person saw Cheng Weiwan, slowed down, and shot Cheng Weiwan a polite smile. Then he brushed past Cheng Weiwan and exited the library.
Cheng Weiguo's unsightly expression after talking to Cheng Weiwan immediately turned into a smile when he saw the man coming out.