a kind of tool used to dredge up fish, water plants or river mud, consisting of a net attached to a pair of bamboo poles, which are used to open and close the net / to dredge with such a tool
lit. you plant a garden and the flowers do not bloom, you poke a stick in the mud and it grows into a tree / fig. things do not always turn out as one would expect / well-laid plans may fail, and success may come where you least expect it
无心插柳柳成阴
wú xīn chā liǔ liǔ chéng yīn
lit. idly poke a stick in the mud and it grows into a tree to shade you / (fig.) unintentional actions may bring unexpected success / also written 無心插柳柳成蔭|无心插柳柳成荫