What does the hook meter fire extinguisher mean?

Goufan fire extinguisher is the stem of the TV series "Country Love". Goufan fire extinguisher is from the 24th episode of Country Love. Li Daguo pursues her daughter Xiang Xiu. Li Daguo came to Xiang Xiu's house and saw Xiang Xiu's father Wang Changgui practicing calligraphy. The banner on the wall of the play is official script, which reads: the spoon can't fill the sea, but the fist stone moves the mountain. Li Daguo read: If a fire extinguisher is used, the fist of the Tang Sea is low.