I don't think tongsan doing preservation to new gen.
Is up to family. 

I watched a video on those road test on Cantonese... I founs my level is way above Guangdong people about 20-30 yrs old.

Dialect is hard to preserve because the words are rare. Not sure on Hokkien word. Cantonese word largely preserve in hkg but is in its path of dying.

I think I've read an article somewhere that Malaysian hokkien ppl are able to preserve more hokkien culture than Fujian itself.

I grew up in an era where everybody speaks cantonese in kl, seeing how the new generation doesnt even understand cantonese is just sad. So sad. Cantonese is a beautiful dialect and it's more closer to the classical chinese than mandarin if you know the history.

The last time we went to HK...
Outside one makan shop..
We queue behind one couple..

Heard the waitress answered them in Mandarin, say full house.. No empty seats..

After they left, we spoke Cantonese to the same waitress... She replied instantly, yau yau... yau wai... But had to split.... 4 of us... 2 at one small table. Another 2 at another small table... 👌😉

Yeah we felt so at home .. 😆 👍