【明報專訊】SINO-US relations have reached rock bottom 40-odd years into their establishment. To contain China in every respect, the US has played the Taiwan card more ferociously. After the US's approval for arms sales worth US$620 million to Taiwan, its House of Representatives passed the National Defence Authorisation Act for Fiscal Year 2021, proposing that Taiwan be invited to join the Rim of the Pacific Exercise (RIMPAC) and requiring that the US conduct port calls in Taiwan with hospital ships. Moreover, a Republican senator has introduced the Taiwan Invasion Prevention Act, which makes it clear that if Taiwan is attacked by mainland forces, the US must help defend the island. To "punish" China, a congressman has even proposed recognising Taiwan as an independent country. Setting its covetous eyes on the US's moves with delight, the Democratic Progressive Party administration in Taiwan has welcomed them with gratitude, arousing Beijing's stern warning. Ordinary people and learned individuals on the island are anxious about all this, deeply worrying that the US's trampling on Beijing's red lines might embroil the Taiwan Strait in the very grave danger of war.