Three stops in china that in two stops I don leave the plane so do I need visa?

I am a Canadian PR card holder and Afghanistan passport holder. I have flight from Vancouver to Dubai and I have 13 hours stay in Chengdu l but between Vancouver and Chengdu I have one hour stay in Shenyang but I don't leave the plane I mean I will be sitting in the plane, then between Chengdu and Dubai I have another one hour stay in Yinchuan​ and I don't leave the plane here too.