LynkSoul
心影随形
LynkSoul (心影随形) is an AI companionship startup founded in 2023 by Binson Liu (刘斌新), a former Bilibili vice president who earlier held roles at Baidu and Qihoo 360 . Its flagship product is DouDou AI (逗逗AI), an AI gaming-companion app launched on August 18, 2025 that drew 1 million new users within its first 10 days . The company is backed by Unity Ventures (九合创投) — whose founder Wang Xiao has publicly commented on Liu's post-accident refocusing of the company — and by Heart Capital (心资本), which invested at both angel and A rounds starting in early 2023 ; it is also a member of Source Code Capital's MaHui founder community . Positioning-wise, Liu frames DouDou as an AI companion that "truly understands you" rather than competing with short video and games for user time , and in a late-2025 Source Code debate he argued the "applications first" side of the models-vs-applications question .
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Coverage
AI Debug Night纯享版：我们聊了一晚上，不会写进BP的大实话｜九合AI奇妙夜之WAIC专场
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Welcome to the world of *Black Myth: Wukong* with AI
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Build a boat and wait for the tide to rise.
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Don't Build AI Products That Compete with Users for Time
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Companionship that doesn't compete for your attention.
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Exclusive Interview with Liu Binxin, CEO of HeartShadow (心影随形).
