zuì hǎo de kè hù gōu tōng, bù shì nǐ yíng kè hù shū, yě bù shì kè hù yíng nǐ shū

最好的客户沟通，不是你赢客户输，也不是客户赢你输。

The best customer communication is not you win and the customer loses, nor the customer wins and you lose.