blow a fuse
Rush into the bull's-eye to describe anger or momentum. From Du Yuan's epitaph 30.
to cast pearls before swine
Playing the lute to a cow is a metaphor for being reasonable to unreasonable people and elegant to those who don't understand beauty. It is also used to satirize people who talk without looking at the object.
There are no cows in the whole eye.
"Zhuangzi Health Master" records that a person killed a cow at first and saw the whole cow. Three years later, he became proficient. When he used the knife, he only saw the gap between the flesh and the bone, but he could not see the whole cow. Later, it was used to describe that skills have reached the level of perfection and handy. It is also a metaphor for not seeing the overall situation.
Like a mud cow disappearing into the sea-gone forever.
"Mud cows go into the sea" is an idiom, which means that Niu Yi's clay sculptures melt into the sea. Metaphor is gone forever, and there is no news.
One hair in nine cowhide ―― A drop in the ocean
Nine hairs is an idiom in China, which means a hair on these nine cows. It means tiny, slight, or very few in a large number. Excerpt from Sima Qian's letter to Ren.