multilingual post cannot show up | Tag problem

In my blog, I made articles with both Eng and Chi with the multilingual feature.

Since the tags cannot be translated, I made english and chinese tags.

The problem is,

in the edit post, I could only add Chi tags to Chi posts, Eng Tags to Eng posts, and;

in the post lists, I could only click on English Tags and English Categories.

Now when i make a custom post list with a specific category and tag, it cannot show the chi posts at all.

I tried making tags like this 'Logs | 日誌' instead of an Eng tag 'log' and a Chi tag '日誌', but my chinese posts never pop up.

Is there any work around with this?

Or this is a fatal flaw in non translatable blog tags and the inability to choose non-main language tags in post lists?