What's so funny about this?

that, Lin Ruochu's body suddenly fell backwards with a thump onto the ground.Lin Jinran was stunned, completely unable to understand what Lin Ruochu meant.Soon, a low growl reached his ears, "Lin Jinr..., so stay away from him."After saying that, he left in a huff.Lin Jinran staggered back a few steps and kicked over a chair.She unconsciously sat down, breathing heavily.Discomfort, anger, humiliation...