Sky ladder: The art of Cai Guo-Qiang

Rico says his friend Kelley, knowing Rico's love for things that go boom, forwards this splendid video:
https://www.netflix.com/watch/80097472?trackId=14170286&tctx=1%2C7%2C6460a0b2-56b0-40bc-8a6d-76530a4646d3-4835397