China has embargoed rare earth exports to the EU [0] as well as enforcing sanctions against the EU's domestic drone and UAV industry [1]. China is also training Russian soldiers on drone tactics to be used in Ukraine [2][3] as well as continuing to back Russia's position on Ukraine [4].
If Europe wishes to be "friends" with China, it means giving Russia primacy within Europe by giving up Ukraine, as well as completely giving up on European domestic industry.
This is obviously unacceptable for most eastern EU member states.
[0] - https://www.reuters.com/world/china/eu-firms-brace-more-shut...
[1] - https://www.scmp.com/economy/global-economy/article/3351292/...
[2] - https://www.reuters.com/business/aerospace-defense/russians-...
[3] - https://www.reuters.com/business/aerospace-defense/russia-ap...
[4] - https://www.reuters.com/world/china/putin-says-russia-china-...