The daily maintenance of a kitchen knife:
1、After using the knife, wipe it clean with a clean cloth and let it dry in a well-ventilated place to prevent the high carbon steel blade from oxidizing and rusting. (The hardness and corrosion resistance of steel are contradictory. All stainless steels achieve a balance between hardness and corrosion resistance. For specific popular science content, you can search on Baidu).

2. If a knife has mold or spots due to humidity, but it is not severe, you can remove it with the following methods: A. Wipe it with vinegar, then wash it with warm water; B. Use an appropriate amount of salt mixed with a little water to scrub the rusty area; C. Soak it in rice water, which prevents rust and removes rust.

3. The fishy smell of a knife can be removed with ginger. If a knife has been used to cut fish or onions, it will leave a fishy odor. To remove the smell from the knife, wipe it with ginger, which can remove the fishy smell.