A woman holds marigold flowers to be used as offerings and garlands for Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019. (Photos: Sulav Shrestha/Xinhua)

A woman holds marigold flowers to be used as offerings and garlands for Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019.

A woman collects marigold flowers for the upcoming Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019.

A woman picks flowers ahead of Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019.

A girl collects marigold flowers for the upcoming Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019.

A girl collects marigold flowers for the upcoming Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019.

A woman collects marigold flowers for the upcoming Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019.