In fact, the real reason for turning red is anthocyanins. When it comes to anthocyanins, you may not be familiar with them. Anthocyanins are widely found in the fruits of plants, and the Wan Wen in your hand is also a kind of fruit. Anthocyanins change color with the pH value of the liquid they come into contact with. If they come into contact with alkaline liquids, they will be blue, and if they come into contact with acidic liquids, they will be red.

Human sweat is weakly acidic. After playing for a long time, sweat slowly infiltrated into Wan Wen and reacted with anthocyanins, so Wan Wen turned red. However, if you want to achieve the texture of red and crystal silver antimony, you still need to accumulate over time. This process is also a kind of practice.

Extended data

Don't expose yourself to the sun for a long time when you don't dish walnuts. Walnuts can be placed in clean small cloth bags or plastic bags to prevent them from being exposed for a long time, falling dust, affecting luster and cracking due to temperature and humidity.

Wan Wen walnut preservation should also pay attention to the difference of temperature and humidity. Don't put walnuts around the air outlet of heating or air conditioning or on the radiator in winter. It is humid in summer, so we should pay attention to the moisture-proof and insect-proof of walnuts. In order to prevent cracking, it should be waterproof, windproof and antifreeze: when cleaning new walnuts, don't expose them to the sun after washing; When washing walnuts with water, don't let water enter the core, and don't let the wind blow to the washed walnuts.