There was a knock on the door as Zheng Ren scanned through the messages in his WeChat.
The door of the on-call room then opened, and a man said, "Doctor Zheng is receiving an infusion at the moment."
A cabinet blocked Su Yun's view of the entrance and he could not see who said it. He stole a peek at Zheng Ren, who was still reading his messages intently, unperturbed by the knocking.
A thin figure appeared, followed by two police officers.
Su Yun was bewildered for a second, then realized that they were most likely here to interview and record the statements of everyone involved in the incident earlier.
He gently kicked Zheng Ren, who was deeply immersed in his phone.
"Hello, Doctor Zheng," a man in a casual outfit said grimly as he stood ramrod-straight three steps behind Zheng Ren.
"Huh?" The sudden voice pulled Zheng Ren back to reality and made him turn around.