Two dead and more than 100 injured in Hong Kong’s worst rainfall since systematic weather records began in 1884. Videos show flooded streets, homes, shopping malls, subway stations and tunnels.

The extreme weather has also plunged the nearby Chinese city of Shenzhen, a tech hub of more than 17.7 million people, into chaos, with businesses and transport severely affected.

“I have never seen scenes like this before. Even during previous typhoons, it was never this severe. It’s very scary,” said assistant nurse Connie Cheung, 65, from Hong Kong.

The torrential rain is due to Haikui, a typhoon that made landfall in China’s Fujian province on Tuesday. Although it later weakened to a tropical storm, heavy rainfall has been reported in areas already damaged by last week’s typhoon.

Hong Kong authorities closed schools on Friday and told workers to stay home. The city’s stock exchange was also closed.

Eric Chan, administrative secretary, said Hong Kong’s transport network has been “severely disrupted” and the “state of emergency” will be extended until midnight on Friday.

MTR Corp ( 0066.HK ), which runs the city’s rail network, said at least one line was closed while others were operating with delays. A video clip showed subway workers marching halfway through a station.

A number of roads were destroyed, including a main thoroughfare to the city’s southern beaches. A car fell into a metre-wide pothole when a section of the road collapsed, photos on social media showed.