Seems reasonable to implement cancelations of movies, public gatherings, weddings, funerals etc. The best we can do is slow it down until there is a vaccine.
[1] https://pbs.twimg.com/media/ESizCK7UYAAxIBa?format=jpg&name=...
COVID-19 is highly treatable, but it has to be treated.
If not, it's just hard to believe.
Same with Singapore, due to the close family and business connections to China, there was a flurry of early cases but rapid contact tracing and quarantine has slowed the spread.
It came at significant economic cost, but China's quarantine worked, and the processes established will likely continue to help protect China from another outbreak from re-importation.