A villager collects saffron flowers in a saffron field near Torbat-e Heidarieh, northeastern Iran, on Nov. 4, 2020. According to Eghtesadonline news website, Iran is the world's biggest producer of saffron. (Photos: Xinhua)

A villager collects saffron flowers in a saffron field near Torbat-e Heidarieh, northeastern Iran, on Nov. 4, 2020. According to Eghtesadonline news website, Iran is the world's biggest producer of saffron. (Photo: Xinhua)

Villagers collect saffron flowers in a saffron field near Torbat-e Heidarieh, northeastern Iran, on Nov. 4, 2020. According to Eghtesadonline news website, Iran is the world's biggest producer of saffron. (Photo: Xinhua)