The swallow mouth, mud - although it bit by bit, not a building, but it can base on the nest of happiness.

燕子嘴上的春泥，别看它点点滴滴，筑不成大厦，却能垒起幸福之巢。

youdao

The swallow mouth, mud - although it bit by bit, not a building, but it can base on the nest of happiness.

燕子嘴上的春泥，别看它点点滴滴，筑不成大厦，却能垒起幸福之巢。

youdao