Covid- 19 and Self-Protection

This book "Pandemic and Self-Protection" is written based on the three years of Covid-19 epidemic prevention and anti-epidemic process, combined with other people's and their own experiences. Disasters have been repeating themselves, and tragedies have never stopped. To write history is to remind us and future generations that this is a global biological warfare, a catastrophe that affects the people of the world and affects the global economy. In the book, the author analyzes some of the m...