君子之交淡如水 jūnzi zhī jiāo dàn rú shuǐ

jūnzi zhī jiāo dàn rú shuǐ phrase a gentleman's friendship, insipid as water
Domain: Modern Chinese 现代汉语
Notes: Explanation of idiom from Zhuangzi 庄子 (CC-CEDICT '君子之交淡如水')