If China's tech giant ByteDance lists on the US stock exchange it will be the first Chinese social media company to launch an IPO in American stock history.  Zhou Xin discusses the background to this move, starting with Donald Trump's threat to ban TikTok in Agust of 2020, and the red lines Beijing will have for any access to the powerful algorithms that power Bytedance technology. China tech specialist reporter Masha Borak explains the big differences between TikTok and its Chinese equivalent…