TikTok U.S. users have been learning Chinese on Duolingo in increasing numbers amid their adoption of a Chinese social app called RedNote ahead of the

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

Duolingo (DUOL) stocks are rising as the language learning company reports that US-based users learning Mandarin more than tripled year over year, with 216% growth compared to this time last year. The surge comes as the looming TikTok ban has spurred many users to migrate over to a similar Chinese app translated as "Red Note.