Now the skin of the underground world can't be bought in the official mall. Some time ago, postcards issued by China Post had a chance to get this skin, and they won by buying five cards in a row. Now this activity is gone. You can go to Taobao if you want to buy it. Some people sell CDK. This must be guaranteed by word of mouth. I often buy skin CDK from Taobao. I heard that some time ago, Ruofeng's Taobao shop sold this kind of skin. I don't know if it is sold out now. You can go and have a look. However, this skin belongs to limited skin and is very difficult to obtain. The price of CDK sold online is also very expensive. You can get one if you can afford it. This skin is definitely worth buying. Handmade, I hope it will help you.