In traditional Chinese culture, bats are undoubtedly beneficial beasts. Some species of bats are brightly colored and beautiful. But when hundreds of millions of bats gather together to shade the sky, it feels nothing but horror. Photograph: Wang Wu

The Great Migration of Bats takes place in Southern Africa, where hundreds of millions of fruit bats flock from sub-Saharan Africa to Kasanka National Park in Zambia in November.
They feed on the fruits here, go out in the evening to forage, and return home at dawn.
Countless fruit bats rushed from the woods to the sky as night came, obscuring the sky in an instant.
The next morning, a large number of fruit bats in the sky flowed back to the forest like black swirls, and the swarms of fruit belly looked really scary.
The sound of millions of pairs of wings flapping, combined with the sound of estrus, sounds like it makes your scalp tingle.
But what is more terrifying than the number is their appearance.
Many people cannot accept their demonic image.
Fruit bats like to live in groups, densely packed together like wasps in a hive.
Fruit bats are large and can reach a wingspan of more than 100 cm.
They are a flyer, graceful when they slide their wings, and are not inferior to any birds.
Fruit bats have a long lifespan, reaching 30 years old, breeding in the dry season every year, two litters a year, and only one litter at a time.
Fruit bats mature and give birth after 18 months, and 97% of male bats in the population complete 97% of mating.
Their staple food is mainly figs, but they also eat other fruits, which weigh more than 3 kilograms on average, which is why humans prey on them. And so the tragedies kept happening. Photograph: Wang Wu