He will become very rich overnight because his grandfather promises to give him 30 billion yuan.

他将一夜暴富，因为他的祖父承诺给他300亿元。

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He has to use up one billion yuan within a month first, or he will get nothing.

首先，他必须在一个月内用完10亿元，否则他将一无所获。

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Scientists predict that Chengdu could save around 1.2 billion yuan in electricity every year if a new moon lit up 50 square kilometers of the city.

科学家预测，如果一轮新月照亮50平方公里的城市，成都每年可以节省约12亿元的电费。

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Overall, 127 people made the list, with a net worth in excess of 10 billion yuan.

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In January Alibaba said it would invest up to 30 billion yuan in new warehouses.

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That overtakes the second-place Three Gorges Dam, which cost a mere 203.9 billion yuan.

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