This is simplified chinese version,so you don't have to use app to open it.(if you use simplified chinese system)
You should just open the game directly,so that you could escape from facing some unexpected problems. Besides,if your system isn't simplified chinese system,you may try to use app to change the language to simplified chinese instead of japanese.
I had just misuderstood what you said.I am sorry.Let me think a while.
Have your computer installed the simplified chinese word stock?May be that's a possible reason.