Prior to the Hong Kong pro-democracy movement and the Covid-19 pandemic, China’s presence on international social media was largely to promote a positive image of its country – trying to ‘change the climate’ rather than seeking to sow confusion and division. But this is changing. In this investigation by File on 4 and BBC Monitoring, Paul Kenyon and Krassimira Twigg examine China’s new strategy of aggressively pushing disinformation on social media platforms through the use of ‘wolf warrior’ diplomats, internet bots, ‘the 50-cent army’ of loyal Chinese netizens and a longer term goal of inventing a new type of internet where authoritarian governments can control users. Editor: Lucy Proctor Producer: Jim Booth