Basically it's gone case for the whole of Dongguan in this 3 months.

Outside of Dongguan still have KTVs available but cannot be too fussy.

Even if some Dongguan KTVs manage to open within these 3 months they may not have hostesses available.
After re-opening KTV flower street and hostess in sexy outfits will only be in the history books.
Alternatives outside of China are Bangkok, Jakarta, Ho Chi Minh, Phnom Penh, Vientiane, etc.
Take your pick!