Not so long ago, East Asia was hit by another epidemic virus. So they are better prepared than many other countries. They have reserved workforce, researchers,

Not so long ago, East Asia was hit by another epidemic virus. So they are better prepared than many other countries. They have reserved workforce, researchers, and labs to deal with it in South Korea. Therefore, they were able to mass produce fast test kits so quickly. The population is also better prepared for this situation. They still remember it and know they have to follow all the advice coming from government and health experts. Even before the spread of Covid-19 outside China, all East Asians started to use face masks. I'm not saying mask helped them, I mean that just shows how their society still remembers the last time that they were hit by a virus.