学姐

曹禺,矛木。不知从什么时候起,我们都叫她学姐。高一的时候有一回青马活动,和学姐两个人一前一后走回教学楼。那时留下的印象是,这个人说话像新闻联播。高二,高三,不知道是怎么认识的,或许“文艺癖”或迟或早总会变熟,渐渐地和学姐有过闲聊,送过生日礼物。高三下,学姐坚持在教室后的白板上写每日一句,印象最深的是福楼拜“我把时间给你…”云云。学姐的作文是叙事风格的哲思,很符合学姐的气质,那段时间向学姐讨教过不少作文问题。
大一秋,学园有一个写信活动,提供信纸与信封,免费寄信。当时给关系很好的三个同学写了信。彼时微信上和学姐说,写这个能加二课分。后来再写信、聊天,就不需要借口了。写信成为一个传统,一段传说。杭州的电报业务结束的最后一天,学姐拍来一份电报,以作纪念。
学姐有自己的公众号。身边写公众号的同学都是文艺青年,都很有才气,喜欢。
入党积极分子考试那天,十一月,下午带论打完比赛正在吃饭,突然看到学姐的消息:她来港了!彼时得有一年多没见。夜晚,从蓝田走到大胡子吃夜宵,再走回来,拍了拍立得。种种契机,学姐成为最先知道,也是知道最多学妹的人。谁让她刚好是学姐呢!
我将永远记得,在我心态最谷底的那天,一通电话学姐陪我聊到凌晨三点,给我做出选择的勇气。此后的重大节点,学姐从未缺席。有的人只能闲聊,但学姐是真的能解决问题的。
新疆行,人生时刻。感谢学姐的精心筹划!文艺,干练,有爱,其此之谓乎!

Hi, I’m Cao Xuan, an undergraduate student studying Control Science and Engineering at Zhejiang University.
My main interest is efficient AI systems. I want to build algorithms that are not only effective in theory, but also hardware-aware, computationally efficient, and grounded in solid mathematical principles.
I am especially interested in the interaction between machine learning, optimization, probability, information theory, numerical computation, and modern hardware. Rather than treating algorithms and systems as separate layers, I hope to understand how hardware constraints can shape algorithm design, and how mathematical structure can lead to more efficient implementations.
Ultimately, I want to develop practical algorithms that combine theoretical insight with systems efficiency to solve meaningful problems in the real world.