Hello from a Chinese user. Seems this solution is working fine. The GMS installer in Meizu App store is still not updated to 4.4.6. Please update it so everyone not seeing this thread can benefit.

Also, a tip for those who can't uninstall their google play service. You have to go to system settings and configure the "Device Administrators" setting. Deactivate any google related apps in it and you'll be able to uninstall it.