水培

水培	shuǐ péi	to grow plants hydroponically
水	Shuǐ	surname Shui
水	shuǐ	water / (after a name) ... River / to swim (used mostly in 会水 and 水性) / (coll.) lacking in substance; shoddy / (bound form) additional cost; extra income / classifier for washings of a garment
培	péi	to bank up with earth / to cultivate (lit. or fig.) / to train (people)