Zhang Yuanyuan, the owner of a jade shop in Langfang, came back from a high-risk area in Yunnan, without filing and registration, and without isolation 14 days. When he got home, he held a birthday party for his children in the village, invited relatives and friends, and even invited many classmates to celebrate his son's birthday. Later, he went to a big restaurant for dinner. In order to go to Guangdong, he went to Shandong without waiting for the result. As a result, the nucleic acid was positive, and he was notified by the CDC and killed on the expressway. By this time, the Omicron virus had spread among her relatives and friends, and also among the children at school. After the isolation, she sent a video without any regret, just saying that she was sorry for her relatives and friends. Everyone in Langfang was isolated at home because of her, but she didn't say a word.