“如果美方一意孤行，由此造成的后果必须完全由美方负责”

The joint drills of the PLA Eastern Theater Command are a necessary and legitimate move to safeguard national sovereignty and territorial integrity, crack down on "Taiwan independence" separatist forces and their separatist moves and send a warning to external interference and provocation. It is fully consistent with international law and common practices.

Theater：战场；战区

separatist /ˈseprətɪst/ ：分裂主义者

I need to stress that Taiwan is an inalienable part of China's territory. This is both a fact based on history and the true status quo, and it will remain so in the future. "Taiwan independence" is doomed to fail. The Chinese people will not be deterred from defending our sovereignty and territorial integrity. The 1.4 billion strong Chinese people will resolutely push back any separatist activity for "Taiwan independence". Anyone seeking "Taiwan independence" will find themselves crushed by the historic trend of China's complete reunification.

inalienable/ɪnˈeɪliənəbl/：不可剥夺（或分割）的

strong：（用于数字后，表示某集体的规模）多达……的，计有……的

We urge the US to stop conniving at or supporting "Taiwan independence" separatist forces and stop meddling in China's internal affairs. Any attempt to endanger China's national sovereignty and territorial integrity will be met with China's resolute response.

China firmly opposes official interaction in any form between Taiwan and the US and opposes US interference in Taiwan affairs in any form or under any pretext. The US Congress is part of the US government and supposed to strictly adhere to the one-China policy followed by the US. Any visit by congressional members to Taiwan will seriously violate the one-China principle and the three China-US joint communiqués, interfere in China's internal affairs, undermine China's sovereignty and territorial integrity and send a seriously wrong signal to "Taiwan independence" separatist forces.

China urges the US to seriously abide by the one-China principle and the three China-US joint communiqués, not arrange for any visit by members of the Congress to Taiwan, stop official interaction with Taiwan, stop creating tensions in the Taiwan Strait and act on the US commitment to maintaining only cultural, commercial, and other unofficial relations with the Taiwan region and not supporting "Taiwan independence". Otherwise, all consequences arising therefrom must be borne by the US.

来源：外交部官网