Viral Video Watch: 85-year-old primary school building ‘walks’ to a new location in Shanghai It took 18 days and 200 devices to lift the 7,000-tonne building, ‘South China Morning Post’ reported. Scroll Staff Oct 30, 2020 · 05:15 pm Play Support our journalism by subscribing to Scroll+. We welcome your comments at letters@scroll.in. Shanghai Viral video