Emm... This is my way to deploy. It's the same script but in different orders.
I forgot to install the Chinese Pinyin IME, so I'm typing English.
I have to say that this method has been used for a long time by me.
Add-Appxpackage -Register "%ProgramFiles%\WindowsApps\*\AppxManifest.xml" -DisableDevelopmentMode
I'm using build 21380 now.