BEIJING--When Eileen Gu won Olympic gold in the Big Air ... surged 20-fold on Chinese e-commerce platform JD.com. Luckin Coffee sold out of Gu-endorsed drinks, with a spike in cup-holders bearing ...

Open China's Twitter-like platform Weibo, and most of the pop-up ads have one thing in common: Eileen Gu. Even before the ... Chinese milk company Mengniu and coffee chain Luckin Coffee, per ...