Beijing's suburban rail network suspended multiple lines on Monday as authorities upgraded its rainfall warnings to red alert, the highest level, for five districts facing potentially heavy rains in the afternoon.

The Beijing Suburban Railway announced cancellations affecting three routes: S2 Line, Tongzhou-Miyun Line, and Huairou-Miyun Line, with 22 trains temporarily canceled.

Residents in affected districts are urged to choose other means of transportation, the statement from the company added.

The move comes as the Beijing Meteorological Service activated red rainfall alerts for Mentougou, Fangshan, Fengtai, Shijingshan, and Huairou districts.

Over 150 mm rainfall is expected in these districts starting at noon on Monday, triggering an extremely high risk of floods in mountainous regions and mudslides, landslides, and severe urban waterlogging in low-lying areas.