On the rings of history, 2021 is destined to be an extraordinary year. On July 1, at the conference celebrating the 100th anniversary of the founding of the Communist Party of China, * solemnly declared that he had achieved the first centenary goal and built a moderately prosperous society in all respects, solemnly declared his firm determination to uphold and develop socialism with Chinese characteristics in the new era and move towards the second centenary goal of building a modern and powerful socialist country in all respects, and pointed out that the pioneers founded the Communist Party of China a hundred years ago, and formed a great party-building spirit of "upholding the truth, upholding the ideal, fulfilling the original intention, undertaking the mission, not afraid of sacrifice, fighting bravely, being loyal to the Party and living up to the people", which is the spiritual source of the Communist Party of China. In May, at the academicians' conference of the two academies and the 10th national congress of the China Association for Science and Technology, * issued a new mobilization order for scientific and technological innovation-we should be brave in exploration, highlight originality, adhere to a problem-oriented approach, proceed from the urgent and long-term needs of the country, and strive to achieve high-level scientific and technological self-reliance and self-reliance in the new stage of development, so as to build a world scientific and technological power. Under the strong leadership of the CPC Central Committee and under the personal command and deployment of *, China has achieved satisfactory results in the prevention and control of the novel coronavirus (COVID-19) pneumonia epidemic in the past year. As of November 18, 2021, a total of 2.41 billion doses of COVID-19 vaccine have been administered nationwide, making it the country with the best control in the world regardless of morbidity, severity and mortality.