Chapter 422: 【422】Be careful not to let the teacher hear your conversation.

He Xiangyu and Lau Jingyun quieted down as they listened to her speak.

The person who had quietly arrived later stood by, also listening in.

"The reason it stayed in the esophagus is because you, Senior Sister, ate too much, and the food was moving down slowly, unable to drag the fish bone along with it," Xie Wanying continued. "Then you went to perform CPR, leaning forward, which exacerbated your post-drinking nausea. The food refluxed from your stomach, pushing the fish bone back up, and as soon as its end snagged some more food, it pierced through the wall of your esophagus. You probably started feeling some pain. I noticed your sleeping posture was odd, your hand covering that spot in a motion as if you were reaching up. You didn't know that the fish bone was stabbing upwards; you just knew it hurt there and were soothing it. As a result, with every push, your stomach refluxed even more, and it suddenly pierced through. The esophagus wall is very thin."