It takes two hands to pour oil and soy sauce. It's inconvenient to hold the bottle in one hand and the bottle cap in the other. The design of automatic bottle cap can be made of a piece of iron sheet, a lead wire and a nut. Dump the oil bottle, gravity makes the nut droop, and automatically pull open the bottle cap; The oil bottle stands upright, the nut is reset by gravity, and the bottle cap closes automatically. This way, you can free up one hand to take the spoon, and you will never be in a hurry again. Just loosen the lead wire bracket, take off the automatic bottle cap and replace it with a bottle stopper, and you can buy oil in the store. It is convenient to hang the lid of the meal, but it is inconvenient to store the meal in summer. Put it in a bamboo basket, the hole is big, flies can climb in, and the bottom area of the basket is limited, so there is not much room for it. The design of the food hanging cover is simple: five disks are bent with lead wire and connected with four strong ropes. Hooks are installed on it, and the periphery is covered with mesh window screens, and the lap joint can be sealed with nylon fasteners. When in use, hang the hanging cover and put the bowl on the disc on each floor. Flies and cockroaches can't get in. When not in use, it can be folded and stored without occupying space.