I have eaten in many good restaurants in Guangzhou over the years - some of them foreign-owned. When forced to close for a time, many will likely never re-open. In a few weeks, we may be looking at a similar action in US cities.
Both Toronto and Vancouver have large Chinatown areas, as well as other more modern areas where Chinese restaurants dominate. There have been stories from both cities of restaurants suffering as much as a 70% decline in customers. And it’s not primarily traditional Canadians avoiding anything Chinese, its Chinese-Canadians who are staying home. Go to a good Chinese restaurant in Toronto and 95% of the customers are Chinese. Uber Eats and other food delivery services are doing great business, but this eats into the profits of the restaurants. There will likely be quite a few of these places that won’t survive a sustained slowdown.