Nucleic acid tests are conducted in Xi'an, Shaanxi province on Oct 20. [Photo by Ruan Banhui/for China Daily]

Nantong Xingdong International Airport in Nantong, East China's Jiangsu province published a notice on Oct 20 stating that passengers meeting one of the following conditions are required to show negative 48-hour nucleic acid test results and also must be under health monitoring for seven days from the day they arrive in Nantong.

Three nucleic acid tests will be taken during the seven-day health monitoring period.

On Oct 18, Shaanxi province reported six locally confirmed COVID-19 cases and one asymptomatic case, with those people having traveled from Inner Mongolia autonomous region, Gansu, and Shaanxi. Yinchuan in Ningxia Hui autonomous region also reported related confirmed cases.

Condition one: People who have been to Erenhot, Inner Mongolia autonomous region on Oct 2 and after;

Condition two: People who have been to Zhangye, Gansu province on Oct 8 and after;

Condition three: People who have been to Ejine Banner, Alshaa League in Inner Mongolia autonomous region on Oct 8 and after;

Condition four: People who have been to Jiayuguan, Gansu province on Oct 12 and after;

Condition five: People who have been to Xi'an, Shaanxi on Oct 12 and after;

Condition six: People who have been to Lanzhou, Gansu province on Oct 15 and after;

Condition seven: People who have been to Yinchuan, Ningxia Hui autonomous region on Oct 16 and after;

Condition eight: People who have been to Fengtai district in Beijing on Oct 16 and after;

Condition nine: People who have been to Changsha, Hunan province on Oct 17 and after;

Condition ten: People who have been to Zunyi, Guizhou province on Oct 18 and after;

Condition ten: People who have been to Wuzhong, in Ningxia Hui autonomous region on Oct 18 and after.