This is the list of agreements made during the visit, , there is only 中法关于中东局势的联合声明 that is related to international conflict (middle east). Whatever AFP or this website claim that Xi said is NOT what China acknowledges. In diplomacy only signed papers have values.
I am sure Macron has tried to make the Russo-Ukrainian war into the joint declaration but Xi rejected the idea (otherwise no joint declaration). So instead of "backing" as AFP tried to present, the reality is "rejection". It is another example of dressing up a failure as success.
View attachment 129250
Xi mentions his support behind the ceasefire during Paris Olympics at 6:47. Hard to say how much weight to put in Xi's words, but I think there is merit in the argument that if China aids in accomplishing a ceasefire, China has more legitimacy on the world stage.