When the British Media starts ‘inventing’ stories regarding other countries, those countries better watch out...as it means that those countries are in the crosshairs of the Neocons.
The main ally that would be useful if Red China decided to invade Taiwan is North Korea. The North Koreans invading the South simultaneously with a Red Chinese invasion of Taiwan would open up a two front war in East Asia. With NATO in a de facto war against Russia and with the U.S. helping the Israelis, the CCP may calculate that the West would be stretched exceedingly thin in a four front war.
Russia and China are allied but like the German Japanese alliance of 80 years ago, neither nation was in a position to help the other except through shared intelligence. Russia has its hands full in Ukraine and possibly Georgia as well.
The Red Chinese have advanced mainly through economic power. We will see if Xi decides to send Red China's untested military into combat