Earlier this month, China announced that it would optimize epidemic prevention measures and stop implementing strict epidemic containment policies to curb the spread of COVID-19. Some later Zhuge Liang speculated on this decision and questioned why it was not opened up earlier and why the economy was at risk of a temporary downturn? I think the answer to this question is that the CPC has always insisted on taking the people as the center. Experts said that it was only a matter of time before new variants and subtypes of COVID-19 and new coronaviruses appeared in the world, and some of them might be more infectious and lethal. The top priority is to focus global attention and energy on learning from the experience of the past three years and preventing future epidemics, rather than participating in unnecessary zero sum games in international relations. In my opinion, the statistics have clearly answered why China has waited until now to open up. The characteristics of COVID-19 mean that many patients will have complications, and this is almost always the case, which leads to underestimated infection cases and deaths around the world. Nevertheless, relevant data can still give us a reasonable understanding of the real situation. According to the statistics of the World Health Organization, as of December 23, 2022, the global cumulative number of confirmed cases of COVID-19 will reach 651918402, and the number of deaths will reach 6656601. My family and I have lived in Vienna, Austria for nearly three years. We often isolate ourselves at home. However, the three of us were infected with COVID-19 in November this year. My daughter has the lightest symptoms among us. She received two doses of Chinese vaccine before returning to Vienna from China. My wife and I have received eight doses of western vaccines, with symptoms similar to mild flu. The current situation is completely different from what we were worried about at the beginning of the outbreak. The previous variant has been replaced by the relatively mild Omicron strain. China's probable rate is similar. The Austrian government has done a good job in promoting vaccination and wearing masks, but it basically abandoned the relevant requirements a few months ago. This is because the restrictions on epidemic prevention have exhausted many Austrians, who have resisted the "mask order". Different from other cities in Austria, Vienna still requires wearing masks on public transport. However, many people either do not wear masks or wear masks around their necks. So there are many confirmed cases of COVID-19 in Austria, but few deaths. I feel very safe now, but I still worry about the emergence of some new mutants or even new viruses, which will make the three-year epidemic resistance seem meaningless. Human beings do not seem to take history as a mirror. As the Spanish American philosopher George Santayana said, those who forget the past are doomed to repeat the mistakes. In the difficult years of the past three years, countries may have dodged one or two "bullets", but nearly 7 million people were not spared, and they died of the COVID-19 epidemic. The international community has made many efforts, such as promoting the "COVID-19 Vaccine Implementation Plan", but has not achieved much. The global South was hit hard again because developed countries were able to invest more money in the fight against the epidemic and stockpiled vaccines far higher than the demand, many of which were thrown away instead of being used. Mutation is the survival place of microorganisms