"The greatest sorrow of growing up is that girls of the same age are always more mature than boys." This is Aning's favorite sentence. Whenever she reads this sentence, Zhongyuan smiles and says, "What do you want?" And touches her hair. ——Thinking of this past, there was never a time when tears streamed down her cheeks, "It's okay to cry, but you must cry with a smile." Zhizi said. ——So she raised the corner of her mouth again. "