Russia was only able to invade Ukraine because it had already secured a mutual support pact with China.

This is the Kremlins version of it-

'The Russian side reaffirms its support for the One-China principle, confirms that Taiwan is an inalienable part of China, and opposes any forms of independence of Taiwan.

The sides oppose further enlargement of NATO and call on the North Atlantic Alliance to abandon its ideologized cold war approaches, to respect the sovereignty, security and interests of other countries, the diversity of their civilizational, cultural and historical backgrounds, and to exercise a fair and objective attitude towards the peaceful development of other States.' http://www.en.kremlin.ru/supplement/5770

China has since the invasion purchased most of the Russian gas and oil which was previously exported to Europe. This is paid for outside of SWIFT. China pays at a discount on world prices similar to its arrangement with Iran. China gains increased exports to Russia, ostensibly of non military manufactured goods although there are obviously areas where what is of military utility is arguable. The Russia-China pact has been widely seen by Western analysts as a direct challenge to the US based global order. If Russias Ukraine adventure is successful then it is another step toward Chinas goal of regaining control over Taiwan.

Already the war has demonstrated Chinas capacity to support and sustain both ongoing exports and imports and trade payments to a Russia where Russia has been sanctioned by US/SWIFT. This is in addition to China more than decade long support of Iran despite US sanctions on Iran. This is China demonstrating it is an alternative to US SWIFT trade payments imperialism. They are not using Bitcoin- they are using Yuan - some of it CBDC Yuan.