1. Epidemic situation: The COVID-19 outbreak worldwide in 2020 has had a great impact on the economy, medical care, education and social life of all countries.
2. Blockade: In order to control the spread of the epidemic, governments have implemented different levels of blockade measures, including restricting the movement of people and blocking cities and borders.
3. Social distance: During the epidemic, people are required to keep a certain social distance to reduce the spread of the virus.
4. Masks: Masks became a necessity during the epidemic, and the demand surged, resulting in a global shortage of masks.
5. Vaccine: With the development of the epidemic, countries have accelerated the research and development and popularization of vaccines, and vaccines have become the key to controlling the epidemic.
6. Online education: Affected by the epidemic, schools and educational institutions all over the world have implemented online education, which has had a far-reaching impact on the education industry.
7. Home office: In order to reduce crowd gathering, many enterprises and institutions have implemented the policy of home office.
8. Economic recession: The epidemic has had a serious impact on the global economy, and many countries have experienced economic recession.