Any time there is a new U.S. president, major powers set out to test him and lay the groundwork for future bargaining in potential conflicts. Occasionally, the United States opens the bidding. Such was the case when Washington, through its new secretary of state, Antony Blinken, accused Beijing of human rights violations in Xinjiang and Hong Kong and of various cybercrimes. Beijing responded by calling Washington an enormous human rights violator, adding that it does not speak for the world and should not claim to. This is the tone for a showdown, not...