In brief: While the US has further tightened restrictions on chip-related exports to China recently, there are some entities in the country that have been on an export blacklist for decades. One of these is China's top nuclear-weapons research institute, but that hasn't stopped it from regularly buying Intel and Nvidia hardware.
Less refuelling but more waste than standard reactors
Forward-looking: Data centers have become a massive industry, but many of them aren't very environmentally friendly due to their huge power demands, which are often met through the burning of fossil fuels. One proposed answer to this problem is for the facilities to use their own sustainable power sources in the form of miniature nuclear reactors.