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As a middle age man, I keep my philosophy that “If a man stops learning, that means he is old”. I created this site called “young buck”, because I learned from my students that the American tend to call a young man as a “young buck”. I found that it is very interesting, and I am willing to learn from young people and slow down my aging process. I would like to encourage anyone who happens to read my note to keep learning and keep the moment to learn. May you be young forever.