A policeman directs the traffic near the fallen trees in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Zhang Nan)

A flood prevention staff member opens the gutters in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Zhang Nan)

A citizen walks in the rain in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Xu Chang)

Citizens move a fallen tree in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Zhang Nan)

A deliveryman works in the rain in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Xu Chang)

A flood prevention staff member places warning signs for water-logging in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Zhang Nan)

A citizen walks in the rain in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Xu Chang)

Citizens and police move a fallen tree in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Zhang Nan)

A citizen rides in the rain in Changchun, northeast China's Jilin Province, Sept. 3, 2020. China's national observatory Thursday renewed a blue alert for Typhoon Maysak, which is expected to bring strong winds and rainstorms to eastern and northern China. (Xinhua/Xu Chang)