(history) Water Margin

Kyūjitai form of 水商売: bar and restaurant business / Kyūjitai form of 水商売: chancy trade / Kyūjitai form of 水商売: nightlife business

groundwater pollution, groundwater contamination

Compounds

fishfinder

(mahjong) winning off the final discard before reaching the dead wall, worth 1 翻 (han, “double”)

many mountains and rivers

(figuratively) being carefree and unaware of an imminent danger

(figuratively) larger-than-life characters do not associate with unnoteworthy characters, nor do they concern themselves with trivial matters / (literally) boat-swallowing fish do not swim in tributaries

true friendship between two people of accomplishment needs not be overly demonstrative