On Wednesday and Thursday, India will be celebrating Janamashtami and people are gearing up for the “dahi handi” competition which involves building human multi-tier pyramids. It is a team sport that demands practice and precision in balance and coordination. While the country revels in festive fever and “dahi handi” becomes a trending topic, this recent Chinese video has gone viral. This video of a nine-storey castell, built during a reality show show called “Challenge the Impossible,” was posted by CCTV on its Facebook page.