What's wrong with some iphone models being banned?

It is understood that the mobile phone sales ban that Apple is facing this time was caused by a lawsuit initiated by Qualcomm. The Fuzhou Intermediate People's Court ruled that Apple could not export or sell some iPhone to China because it infringed two patents in Qualcomm. The reason is that Apple was considered by Qualcomm to have infringed the patent, so it filed a lawsuit in China. For Apple, it is obviously not good news. So which products can't be sold in this lawsuit? According to relevant data, at present, seven main models, such as iPhone 6S, iPhone 6S Plus, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus and iPhone X, which support Apple's sales, are all banned. If you really can't buy these old flagships, it is obvious that Apple only has three new iPhoneX this year.