1, after cutting fish grass, throw a gray cage or a shovel of grass, wait for the fish to come around, swirl, some show their heads and mouths, swim around excitedly, and wave their tail fins to make a splash. Grass floating on the water was dragged to the bottom one by one and disappeared into the fish's stomach.

2. The gray cage is actually similar to the bamboo basket, but the bottom is deep and the mouth is wide, which is much larger than the bamboo basket, and there are more fish and grass. In fact, ash cages are generally used to hold straw ash, so they are called ash cages.

3, clearly like a basket, why is it called a cage? This is something I can't figure out. While the dustpan is shallow at the bottom, but the lifting is very high. You can pack a lot of fish and grass by stacking them and compacting them. Grilled dustpan is generally used for loading sand and transporting soil. Its opening is even with the ground, and the soil can be directly scraped in, so it is called grilled dustpan.

4. Liezi Tang Wen tells the story of Yugong moving mountains, saying that he "knocked on the stone to cultivate soil, and the dustpan was transported at the end of the Bohai Sea", in which "dustpan" was used to pick up dustpan and fill it with soil. The things of our ancestors have been used for thousands of years and are still very convenient.