眼见为实，耳听为虚

yan3 jian4 wei2 shi2 , er3 ting1 wei2 xu1

to believe what one sees, not what one hears (idiom). Don't believe what people tell you until you see if for yourself., It ain't necessarily so.

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眼見為實，耳聽為虛|眼见为实，耳听为虚 [yǎn jiàn wéi shí , ěr tīng wéi xū] ► to believe what one sees, not what one hears (idiom). Don't believe what people tell you until you see if for yourself. ► It ain't necessarily so.