Language is very regional in nature, so whether and how to promote mother tongues has to be decided area by area. Where dialects are just "a little poorly" they can be nursed back to health, but those in an advanced state of decline are probably beyond hope.
語言地域性強，所以母語推展也要視地區而定，「輕度中風」還可以多做復健，而重度的大概就沒指望了。