It’s common sense of the Chinese people. There are lots of vendors with cheaper better spec phones. Huawei xiaomi and lots of lesser known brands are offering much more bang for the buck. For around $ 300,- you have a phone with similar specifications as the latest iPhone 15 pro. Apple has to step up a bit (much) to recapture lost market share. I’m afraid Apple already lost China. It’s like the electrification of cars… only Tesla is able to compete for now, the rest will go bankrupt or join a Chinese manufacturer to survive (stellantis, VW).