After more than two years of the global epidemic of C.pneumonia, there seemed to be some signs of improvement after the Lunar New Year with the vaccination and the compliance of the government's prevention policy. We thought that the life of people around the world would gradually go back to normal, but unexpectedly, last week another major event that shocked the world happened, which is the invasion of Ukraine by Russia. Although Ukraine is very far away from us and should not pose any threat to us in Taiwan, and our lives are not affected much, we still need to be vigilant!