There are a lot of thing which are clearly "war support", yet it would be a long and frankly pointless discussion, so i'll just refer to China's own words:
https://www.cnn.com/2025/07/04/europe/china-ukraine-eu-war-i...
"Chinese Foreign Minister Wang Yi told the European Union’s top diplomat that Beijing can’t accept Russia losing its war against Ukraine..."
Him or some other pointed out to some important EU person that if they (China, an industrial powerhouse) were actually supporting Russian war efforts, the war would already be over.