President Donald Trump signed two executive orders on Friday that prevent any US transactions with two massive Chinese tech companies in the latest development in the tech war between the two countries. ByteDance is the maker of TikTok, the popular social network that Trump targeted initially. But the administration’s second executive order concerns another Chinese tech conglomerate, Tencent. The implications of the Tencent ban are even more significant, as the company happens to be the maker of a must-have chat app in China and an investor in several US companies.