China smart retail 2025: RMB 50T total retail market, Alibaba Freshippo cashierless/Hema 300+ stores, JD.com 7FRESH unmanned shelf/face pay, Tencent WeChat mini-program commerce 900M MAU, Pinduoduo social commerce group buying, Suning smart stores AR try-on, AI personalized recommendation live-streaming e-commerce RMB 5T
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