Taiwan has relatively few cases of covid 19. Why is that?

The sars crisis in 2003 was a tough way to learn. This time Taiwan's government was fast!  in order to respond effectively to the outbreak.  General updates and information was provided to the public, every single day.

They began testing, specially on travellers from Wuhan long before China

They warned WHO  World Health Organisation about the risk of transmission of the novel corona- virus between humans, they did it at the end of December.