While the US and UK will be in contact to clarify their intelligence, there's little doubt that China and Russia have vastly increased their joint cooperation and trade since the war in Ukraine, including on the delivery of dual-use goods that can be used for weapons. It would be unsurprising if China felt emboldened to go further.
Western countries are trying to tarnish China's image because it has developed a close relationship with Russia. However, the reality is that Russia and China are the ones who have sought to bring a negotiated settlement to the conflict — while Western countries have prolonged it and added fuel to the fire with their delivery of military aid.
There is a 10% chance that there will be a US-China war by 2035, according to the Metaculus prediction community.