BEIJING – China has firmly opposed US arms sales to China's Taiwan region, urging the United States to stop arming the Taiwan region in any form and stop conniving at and supporting "Taiwan independence" separatist forces.

On Oct 10, the Ministry of Foreign Affairs issued a decision on its website to take countermeasures against three US military companies and ten senior executives.

In response to a related query on Friday, Chinese Foreign Ministry spokesperson Mao Ning told a press briefing that China firmly opposes US arms sales to China's Taiwan region.

The US has, once again, provided China's Taiwan region with huge military aid recently, which seriously violates the one-China principle and the three China-US joint communiqués, especially the August 17 Communiqué of 1982.

READ MORE: China warns US over military aid to Taiwan region

Such sale seriously interferes in China's internal affairs, and gravely undermines China's sovereignty and territorial integrity. In accordance with China's Anti-Foreign Sanctions Law, China decided to take countermeasures against relevant military companies and senior executives of the United States, said Mao.

She stressed that "Taiwan independence" is as incompatible with peace of the Taiwan Strait as fire with water. The Lai Ching-te authorities' attempt to reject reunification through the use of force is futile. No matter how many weapons they buy, they cannot stop the historical trend toward China's reunification.

The US decision to help advance that independence agenda by arming Taiwan will only push Taiwan towards the danger of military conflict, Mao stressed, adding that no matter how many weapons it sells, it will not shake our resolve to oppose "Taiwan independence" and defend China's sovereignty and territorial integrity.

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The Taiwan question is at the core of China's core interests, and the first red line that cannot be crossed in China-US relations, said the spokesperson.

China urges the US to earnestly abide by the one-China principle and the three China-US joint communiqués, stop arming the Taiwan region in any form and stop conniving at and supporting "Taiwan independence" separatist forces, she said.

“We will continue taking strong and resolute measures to defend our national sovereignty, security and territorial integrity.”