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Hello.

My name is Xinke Guo-Xue. I am an American.

I run math classes for students aspiring to learn math well or prepare for math competitions.

I also play the piano and sometimes stream it on Twitch.

In my free time, I like learning more math and more piano pieces.

I also do some math volunteer activities.

I am sometimes active on the AoPS forums under the username

hurdler

I am also a grader for OTIS and a teacher for AoPS

About

XInke is a teacher and recreational mathematician. He has also played piano for 20 years. His passion is sharing his passion of math to younger generations of aspiring mathematicians or motivated math students.