A massive swarm of tiny flying insects filled the sky above Hulunbuir in Inner Mongolia on September 16, with footage showing thousands of dark specks moving in a dense formation that appeared to blot out parts of the sky.
A massive swarm of tiny flying insects filled the sky above Hulunbuir in Inner Mongolia on September 16, with footage showing thousands of dark specks moving in a dense formation that appeared to blot out parts of the sky.