Beijing said rules implemented in October against U.S. companies selling advanced semiconductors and manufacturing equipment to Chinese buyers are “trade protectionism.” (CNN)

Talking point: The Biden administration called them measures to “protect U.S. national-security and foreign-policy interests,” noting that the Chinese government puts chips in military applications including “weapons of mass destruction” and autonomous systems. Both countries are bidding to build up their domestic semiconductor sectors, spending on production and R&D. Even as he warns against tech trade wars, Chinese President Xi Jinping has said his country will work to build “self-reliance and strength in science and technology.”