想买个EVA的手机壳，结果淘宝逛了一圈没喜欢的，就干脆按照自己的想法画了一个，这个比例适配的手机是P30 pro

I wanted to buy an EVA mobile phone case, but I didn’t find one I liked after shopping around Taobao, so I simply drew one according to my own ideas. The mobile phone suitable for this ratio is the P30 pro.