that was too loud," Ou Yan walked to the crowd, glanced at them casually, "Aren't we going to check the monitor""Yanyan...""Let's do it." Ou Yan's tone was calm. "I also want to see if anyone is playi...ew, I'll bring them back for you to try.""No need, thank you." Ou Yan still didn't take his things."Hello, I'm Xu Yong from Pediatrics Class 3. I have some medical knowledge that I'd like to share wit...