Pinyin:
yú fāng shuǐ fāng
Explanation:
Whatever the shape of the vessel holding the water is, the water will also take the same shape. It is a metaphor that the words and deeds of people above affect the atmosphere.
Source:
"Xunzi: The Way of the King": "The king is the plate, the plate is round and the water is round; the king is the bowl, the bowl is square and the water is square.
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Example: