What does Zhang Boli mean by outbreak after January and February?

Zhang Boli said that after the outbreak of the epidemic in February, it meant spring blossoms. Zhang Boli said that the epidemic situation has changed greatly at present, and to adapt to the changes, China's prevention and control policies are constantly being optimized and adjusted according to this logic. Omicron virus is highly contagious and weak in toxicity. Asymptomatic people account for 30% to 40%, upper respiratory symptoms account for 40% to 50%, and cases and sequelae are mild. After the optimization and adjustment of prevention and control policies, the number of infected people will increase in the short term, but the overall development is in a good direction. After the peak of 1 and February, it is expected that the epidemic will enter the normal state in spring, and there will be no large-scale infection, and people's work, life and study will gradually be unaffected.