Ziyi Yang bio photo

Ziyi Yang

Ph.D. student in Computer Science

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Everyone wants to know what Thoreau was thinking when he was living by the pond.


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We at the pond.


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I’ll be in dangerous if you think these two pics are shot successively…


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My lovely girlfriend!


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Thoreau’s House site, I still cannot finish his book, and I doubt I’ll never finish it.


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A historical trunk. (1837-2015)


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An interesting traffic sign.