Today, let's talk about the common defects of walnuts, the so-called bubble medicine is that walnuts are soaked in some chemical preparations, and then the color of walnuts is changed, including its cortex to make the whole walnut look better, the color of the walnut is abnormal, some are particularly yellow, and some are particularly red. 
The walnut with a serious bubble is a bit like the plastic feeling, which is very unnatural, the color of the normal walnut should be the kind of earthy yellow or earth red, which is a normal wood color, some walnuts taste very bad after soaking the medicine, and you can also judge whether it has been soaked in medicine through this, why do walnuts make medicine?As long as it is a walnut in particularly good condition, it will generally not be soaked in medicine. 
There are only the kind of walnuts that have problems, for example, it has a pubic skin, color difference or yellowish, and some are walnuts that are not peeled in time, it will turn black, this walnut is soaked in potions, its color will become very ruddy and very good-looking, can the walnuts soaked in medicine still play?In fact, the bubble medicine only plays a role in covering up the defects, it does not say that the original defects have been removed, and after you play for a period of time, these defects will still appear. 
The walnut that is not serious in the bubble medicine can be played normally, but its color is very slow, ** in this pair of stuffy white is just bought when I first bought it, its color is very red, but a little abnormal, through playing for almost a year, the color is basically normal, especially ruddy and particularly good-looking, the walnut soaked in the medicine is not harmful to **, this question is not easy to say, depending on what kind of medicine the seller uses, the proportion of it to water, and how long to soak and many other factors. 
But now the general walnuts are relatively cheap, or it is recommended that you buy normal walnuts to play, so that the final effect will be better, the general walnuts with more serious bubble medicine, basically you can see at a glance, it is very different from normal walnuts, but those walnuts with slight bubbles are difficult to distinguish, so when you buy new walnuts, you must find a reliable seller, and then compare it with the normal walnut color, cortex, etc. Wen plays walnuts