Subject + 下山
The verb 下山 (xiàshān) means 'to go down the mountain' or 'to descend a mountain.' It is a verb-object compound composed of 下 (to go down) and 山 (mountain). It is used literally for mountain descents and sometimes figuratively to mean leaving a secluded place.
天快黑了,我们赶紧下山吧。
Tiān kuài hēi le, wǒmen gǎnjǐn xiàshān ba.
It's getting dark soon; let's hurry down the mountain.
下山的路比上山还难走。
Xiàshān de lù bǐ shàngshān hái nán zǒu.
The path going down the mountain is even harder than going up.
他们下山以后找了家饭馆吃晚饭。
Tāmen xiàshān yǐhòu zhǎo le jiā fànguǎn chī wǎnfàn.
After they came down the mountain, they found a restaurant for dinner.