Beijing will continue to implement closed-off management on communities and villages in the region to curb the possible rebound of the coronavirus pandemic ahead of this year's Two Sessions, China's biggest annual political event, a local official said Sunday.

Underscoring the complex overseas pandemic situation and pandemic rebound in several areas in China, Zhang Ge, deputy head of the organization department of the Communist Party of China Beijing municipal committee, said the capital will continue conduct management over personnel returning to Beijing.

Beijing saw its critically-ill cases drop to zero on Sunday. There are six COVID-19 patients remaining in hospitals citywide, the health official said on Sunday.

The 13th National People's Congress, the country's top legislature, will open its third session in Beijing on May 22, while the National Committee of the Chinese People's Political Consultative Conference on May 21.