A boring idiom.

The idioms that grind people are as follows:

Grinding into needles is indelible, learning and pondering. Many things need grinding, such as unloading donkeys and killing donkeys, sharpening knives on the ground and grinding teeth, which is a waste of time. I will not grind them all my life, tormenting Jiu Nan ten times, grinding phosphorus, coming out of nirvana, grinding, grinding teeth, referring to selling mountains, grinding ears, spinning grinders, fading and erasing.

Grinding disc twice, grinding oil, grinding bricks into mirrors, grinding heels and destroying tops, grinding and quenching, grinding and sharpening knives, Bai Gui grinding, sharpening guns, tapping and sharpening knives, grinding and engraving, grinding needles with iron bars, and rubbing hands and fists.

Grinding the heel to destroy the top, grinding the inkstone, grinding the water, sharpening the knife at the last minute, sharpening the knife correctly, grinding the wood knife, grinding the iron bar into a needle, rubbing the palm, grinding the fist, grinding the tree itch, grinding the cymbals, grinding the beard and grinding the sword for ten years.

Brick grinding on the side wall, washing and quenching, re-grinding the mirror, white grinding the mouth skin, never grinding, sharpening the knife, grinding the skin, tearing the sideburns, and grinding the needle without phosphorus pestle. As long as you work hard, the iron pestle is ground into a needle.

Grinding and polishing, scale polishing, sharpening, sharpening stone, grinding ink stone, grinding water; Grinding teeth, grinding oil, grinding, grinding iron bars into needles, grinding skins, sharpening knives upstairs, grinding children and sharpening them.

Grinding and quenching, phosphorus-free grinding, iron pestle grinding into needles, sharpening and honing, sharpening corners, sharpening knives, sharpening stones, grinding whiskers, grinding bricks, rubbing, grinding whiskers, grinding ink to absorb hairs and grinding.

Wear out iron shoes, the wicked have their own grinding, grinding quenching, stalking and beating, and money makes the mare go.