"The blue of the sky is a picture created by atmospheric molecules, ice crystals, water droplets, and sunlight. When sunlight enters the atmosphere, longer wavelengths of light, such as red light, have greater penetrating power and can pass through the atmosphere to reach the ground; while shorter wavelengths of light, such as violet, blue, and cyan light, are easily scattered when they encounter atmospheric molecules, ice crystals, and water droplets. The scattered violet, blue, and cyan light fills the sky, making it appear blue. The color of the sky is also related to the composition of the atmosphere. For example, Earth's atmosphere is very dense, mainly composed of oxygen, nitrogen, and water, so the sky appears blue and the sun appears yellow on Earth. But on Mars, the atmosphere is thin, mainly composed of carbon dioxide, and there is almost no water, so the sky appears red and the sun appears blue on Mars. Do you understand?"
Liu Nian listened in a daze, not knowing whether what he said was right or wrong. Anyway, he talked a lot, so she just believed him.
Liu Nian coughed and said, "I'm not an expert in this field, but I still want to share my opinion. After carefully listening to your question and thinking about it for a long time, I actually don't know how to answer it. As I said at the beginning, I'm not an expert in this field."
Gu Minhang: ...
Isn't this the same as not saying anything at all?
Liu Nian knew she had just made a huge blunder, so she shut up after saying that and didn't dare to ask any more questions.
Gu Minhang: "Are these related to the certificate you're taking? Is there anything else you don't know?"
Liu Nian chuckled twice, "That's all." She secretly glanced at the time; it was past ten o'clock. Now she could finally leave. "Student Gu is indeed a great talent, with profound knowledge. I admire him greatly and am very grateful for his patient explanations tonight. I feel I have learned a lot. Student Gu makes me feel that I can study even if I forget to eat or sleep. But it's getting late, and I should go back. I'll come back to ask you questions next time!"
It's utter nonsense in a serious manner. Not only is it a jumbled mess of words, but the expression is also completely incoherent.
Who would say they've been studying so hard they've forgotten to eat and sleep, only to then add, "It's getting late!"
Gu Minhang: "..." He chose to remain silent.
Seeing that he didn't speak, Liu Nian took it as a tacit agreement and got up to leave.
"I send you."
Liu Nian: "No need! We don't need to deliver to either the upstairs or downstairs neighbors!"
He then walked up two flights of stairs to safely deliver her home.
I really want to thank him.
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