2. When cleaning the wok in the early stage, try not to use detergent. After cooking, while there is still residual heat in the pot, pour water to boil, and then rinse it with hot water.

3. Pay attention to hot pot and cold oil when using iron pot. Heat the iron pan to ensure that the food can be cooked as soon as it touches the bottom of the pan to prevent it from sticking to the bottom.

Be careful not to pour cold water into the hot pot. The strong reaction of thermal expansion and cold contraction will affect the protective layer on the surface of iron pan.