China has delivered a fresh warning to the United States over Taiwan—this time through a high‑level call between Foreign Minister Wang Yi and his American counterpart on June 30. Beijing says both sides agreed the call was “positive and constructive,” but the subtext is clear: China is drawing a red line on Taiwan and reminding Washington of earlier warnings from Xi Jinping himself, who reportedly cautioned Donald Trump that U.S. actions on the island could risk a direct clash.