What changed
Douyin/ByteDance remains the king w/ 1/3 of the mkt
followed by Taobao, WeChat, Kuaishou & RedNote
Baidu is no where to be found. All the ad money goes thru the big 3 - ByteDance, Alibaba & Tencent (Baidu used to the B in BAT, now BD replaced them).
The Big 3 are also the big spenders of AI Cloud now, although Tencent/WeChat has been slow.
Kuaishou is also big w/ its Kling model.
XHS/Red Note still not really relevant in AI — via @tphuang