润下 meaning in Chinese

cause laxation
causing laxation
lubricant purgation
mild catharsis

Han lingsha : the water soaks downwards , entering any gap ; the fire flames upwards , burning any matter ; the thunder converges entad , conquering any rigidity ; the winds blows forth , permeating any impediment ; the soil fertilizes everywhither , syncretizing any substance
韩菱纱：水之润下，无孔不入；火之炎上，无物不焚；雷之肃敛，无坚不摧；风之肆拂，无阻不透；土之养化，无物不融！