LynkSoul

LynkSoul (心影随形) is a Chinese AI companion startup founded in 2023 by Binson Liu (刘斌新), a former Bilibili vice president who earlier held senior roles at Baidu and 360 . Its flagship product is Doudou AI (逗逗AI), an AI gaming-companion app that drew attention for gaining 1 million users within 10 days of launch, per a Source Code Capital piece from September 2025 . On the funding side, Heart Capital (心资本) backed the company early — described in its own portfolio notes as an angel-round investment in the "AI entertainment assistant," though one of its posts also refers to having invested at the A round in early 2023 . Liu himself became something of a founder legend in VC circles: a 九合创投 interview recounts how he survived a serious car accident in October 2024, spent five days in the ICU, and emerged, in the view of investor Wang Xiao, with a sharper sense of what actually matters for the company .