China’s sovereignty and territorial integrity are under threat from ties between the US and Taiwan, which have strengthened during the Ukraine war. Meetings with Taiwanese officials do nothing but inflame potential disagreements between the US and China, in violation of America’s agreed-upon One-China policy.
Taiwan must maintain its independence to maintain the legitimacy of democracy worldwide. In that vein, Taiwan’s leaders are free to meet with whomever they need to meet with to keep its alliances strong. China must not be allowed to intervene in Taiwan’s affairs.
There's a 57% chance that China will successfully control Taiwan within three years, If they invade Taiwan before 2035, according to the Metaculus prediction community.