I said I would time

Suddenly, his expression grew serious. He picked up his phone and stared at it intensely. The next moment, he dashed out.,After half a minute, Lin Xing panted and ran into the classroom. She let out a sigh of relief, then laughed: "It's okay, it's okay, I almost missed class.",Just then, with a light crack, the front door of the classroom swung open.。