A video has been released in China that shows the terrifying moment two window cleaners on a suspended platform are sent flying back and forth through the air and slamming repeatedly into the 91st floor of a Shanghai skyscraper.

In the minute-long video posted on Chinese video sharing platform YouKu, the platform can be seen flying through the air in the gale force winds before hitting the window of the World Financial Center in Shanghai.

According to fanjian.net, the platform crashed into window of 100 Century Avenue Restaurant, shattering the glass. All employees on the 91st floor were then immediately evacuated. Luckily, the two workers on board at the time were not shaken off the platform and only suffered minor injuries.