244. I have to talk about Lin Wanning

"Brother Qing Fan, I don't understand something." After a physics class, Lin Wanning asked about something she didn't understand, as usual.

"Go ahead." Xu Qingfan shifted his gaze from the scenery, and even though he had been daydreaming the whole class, explaining simple middle school physics was still easy for him.

"The teacher just said that the ice block floating on the water is because the buoyant force equals the weight of the water, so after it melts, the water level won't change. But why do they always say on TV that when glaciers melt due to global warming, the sea level rises? Shouldn't it stay the same?" The girl rested her chin in her hand as she asked the perplexing question.

The others, upon hearing this, found it surprisingly reasonable and all eyes turned to Xu Qingfan, waiting for an answer.