Does Jilin need to be quarantined when it returns to Lan Shu?

No need. Jilin City, also known as "Northern Jiangcheng", is a prefecture-level city under the jurisdiction of Jilin Province and an important industrial city in China approved by the State Council. Shulan city belongs to Jilin Province, located in the north-central part of Jilin Province. Jilin and Lan Shu are in the same province. As of August, 2022 19, Jilin and Lan Shu are both low-risk areas. It takes 48 hours for Jilin to go to Lan Shu and enter Lan Shu, and it will not be isolated.