I am presuming you are burning this to DVD? Because a DVD is the only interactive content you can have in a movie.
So your movie will consist of your English and Chinese versions on after each other on the time line. Youthen go to the chapters room and create one chapter at the start of each clip, name them as you'd like them to appear (e.g. "Chinese version") and perhaps specify the frame to use as the thumbnail.
Then go to Create Disc and select a menu type from the defaults or download one. The DVD authoring aspects of PD are very limited and cumbersome. For example you always have to have the first screen with the elements "play" and "scenes".
Once you have selected your template you can modify it and alter the text on both the main menu (root) and the sub-menus. What I believe you want is:
Main menu:
Title: [this is your title]
Rename "play" to Play English and then Chinese version"
Rename "scenes" to "Click here to select which language version to play"
Sub menu:
Modify the menu to have two buttons. Your template may have one or more than 2 so add / delete as appropriate.
The menu should pick-up that each button is named as per your chapters
If you named the chapters correctly you'll find people see two buttons to click: "Chinese version" and "English version"
So in essence I think this does what you are after but you cannot avoid having the initial choice at the front being "play" or "scenes" (because PD is not flexible with the menu layouts).
Does this help?
Rob
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