When did the new round of COVID-19 epidemic in Shanghai start? It's hard to calculate exactly. I only remember that the online online classes started in the middle of March at the children's school. If this is the node, we have been locked in the community for almost 50 days. Now let me calculate how many jin of rice our family of four has eaten these days? People in Jiangsu and Zhejiang are southerners. Usually, they mainly eat rice. Sometimes they will order noodles for convenience. They seldom eat steamed stuffed buns, dumplings and steamed buns. At the beginning of the epidemic, there were about 15 jin of rice+10 jin of rice+20 jin of rice in a bag in the rice bucket at home. Later, the father company issued a bag of 10 jin of rice, a government gift