A Nepalese girl picks marigold flowers for the upcoming Tihar Festival in Kathmandu, Nepal, on Oct. 24, 2019. (Photo by Sulav Shrestha/Xinhua)

A Nepalese woman collects marigold flowers for the upcoming Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019. (Photo by Sulav Shrestha/Xinhua)

Blooming marigold flowers are seen at a flower farm in Kathmandu, Nepal, Oct. 24, 2019. (Photo by Sunil Sharma/Xinhua)

A Nepalese girl collects marigold flowers for the upcoming Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019. (Photo by Sulav Shrestha/Xinhua)

A Nepalese girl collects marigold flowers for the upcoming Tihar, the Hindu festival of lights, in Kathmandu, Nepal, Oct. 24, 2019. (Photo by Sulav Shrestha/Xinhua)