I'm fairly sure Dingyi can not use your shares to 'vote' full...

I'm fairly sure Dingyi can not use your shares to 'vote' full stop - let alone vote down any other bid.

The directors have a fiduciary obligation to put any competing bid (if its better/approved) to shareholders.

If this happens shareholders must be given the opportunity to vote again.

The main downside is not being able to trade.