Tā xué biérén de jiǎngkè fāngshì, jiéguǒ huàhǔlèiquǎn.
He copied another teacher's lecturing style, but ended up with a poor imitation.
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From 《后汉书·马援传》: Han general Ma Yuan (马援) warned his nephews against imitating the reckless knight-errant Du Jiliang, saying they might 'draw a tiger and end up with a dog' — unable to match the original and only making themselves look foolish.
