This photo taken on Feb. 3, 2023 shows the frozen Humber River in Toronto, Canada. Environment Canada has issued an extreme cold warning for Toronto on Friday. (Photo by Zou Zheng/Xinhua)
This photo taken on Feb. 3, 2023 shows an ice-covered barrier along Lake Ontario in Toronto, Canada. Environment Canada has issued an extreme cold warning for Toronto on Friday. (Photo by Zou Zheng/Xinhua)
This photo taken on Feb. 3, 2023 shows the Lake Ontario with steam fog in Toronto, Canada. Environment Canada has issued an extreme cold warning for Toronto on Friday. (Photo by Zou Zheng/Xinhua)
People brave the cold as they walk on a street in Toronto, Canada, on Feb. 3, 2023. Environment Canada has issued an extreme cold warning for Toronto on Friday. (Photo by Zou Zheng/Xinhua)
People brave the cold as they walk on a street in Toronto, Canada, on Feb. 3, 2023. Environment Canada has issued an extreme cold warning for Toronto on Friday. (Photo by Zou Zheng/Xinhua)