People are seen on a bus in the snow in Tehran, Iran, on Nov. 16, 2019. (Photo by Ahmad Halabisaz/Xinhua)

People are seen in a bus in the snow in Tehran, Iran, on Nov. 16, 2019. (Photo by Ahmad Halabisaz/Xinhua)

A man drives a snowplow to clear the snow in Tehran, Iran, on Nov. 16, 2019. (Photo by Ahmad Halabisaz/Xinhua)

A woman takes pictures at a park in Tehran, Iran, on Nov. 16, 2019. (Photo by Ahmad Halabisaz/Xinhua)

A woman walks past a street in the snow in Tehran, Iran, on Nov. 16, 2019. (Photo by Ahmad Halabisaz/Xinhua)

A man walks past a street in the snow in Tehran, Iran, on Nov. 16, 2019. (Photo by Ahmad Halabisaz/Xinhua)

Students take pictures at a park in Tehran, Iran, on Nov. 16, 2019. (Photo by Ahmad Halabisaz/Xinhua)

A woman walks on a street in the snow in Tehran, Iran, on Nov. 16, 2019. (Photo by Ahmad Halabisaz/Xinhua)