Teng Hung-chi. When he was a student, he worked 7 a mechanic. One day, he was going to the night in the Kremlin. 19 children there wait for the coming of Grandfather Frost, they wash his dirty hands in the factory, but he did not want to touch the faucet. He thought of a way get gifts at the front door. 20 , people will eat meat dumplings and snacks as well. to 8 the problem: a faucet that could work without 9 touched. He 10 his idea 11.

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