Many Americans are joining RedNote, also known as Xiaohongshu, as a potential TikTok ban looms in the US. As they hop from TikTok to RedNote, some of the so-called TikTok refugees are learning Mandarin to bridge the language divide on the Chinese app.

RedNote is a foreign-owned app, and experts warn that it could be attacked by the same law that is now banning TikTok.

Duolingo has seen a surge in U.S. Mandarin learners as TikTok users explore Chinese social app RedNote amid a looming ban.

"First of all, the Chinese are so nice, they're so sweet and so welcoming. They've over here teaching us Mandarin."

Despite the massive popularity of RedNote in the United States and the different corners of the globe, a majority of its users are still mainly speaking Chinese, and this language barrier has Duolingo racking up its numbers.

Can RedNote sustain its rapid rise to success with US users? Even with a TikTok ban and Duolingo boost, it faces plenty of headwinds.

The company confirmed to CNBC that there's been a 216% increase in Mandarin learners using the app compared to a year earlier. For context, Spanish, one of the most popular languages on the app, has seen a 40% increase over the same period, Duolingo said.

All signs point to TikTok shutting down in the United States on Sunday due to the ban that's set to go into effect after the platform failed to find a new

Duolingo sees a 216% spike in U.S. Mandarin learners as TikTok users migrate to RedNote, boosting demand for language learning apps.

Welcome back to Week in Review. This week, we’re looking at the impacts of the looming TikTok ban in the U.S., including the “TikTok refugees” moving to

Duolingo shares have jumped this week, as the number of Americans learning Mandarin on the app has soared 216%. That's as China's RedNote is now the most downloaded free app on Apple's App Store ahead of the TikTok ban.