Farewell in the dim light, meet again in the light.
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Yu Zhou thought that parting was their last meeting, but he didn't want to see him again at a party.
"I love my motherland, I love learning, I love rigorous physics, I love everything in life, but I am always attracted to you and I can't extricate myself from it."
"I want to be like a cloud or a gust of wind, loving you, hugging you, and kissing you."
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The lights in Xiao Qi's world are lit for Yu Zhou, and naturally they can only be extinguished by him.
"It begins with you and ends with you."
"The most beautiful and proud little prince, the roses are in full bloom for you, and I am here for you."
Concept: Game between mathematics and physics