Several parks in Shanghai's suburban areas reopened on Monday, with a limit on the number of visitors and requirement for negative nucleic acid test results from within the previous 48 hours.

Guhua and Jinhai Lake Parks in Fengxian District are two of those parks, but the number of visitors will be kept below 50 percent of their maximum capacities, according to the district's greenery and public sanitation bureau.

Alarms will be triggered if the number peaks, and measures are in place to prevent gatherings.