Popular TikTok accounts such as DuoLingo shared trade secrets before the app went dark in the US, while creators confessed to long-running inside jokes.

As "TikTok refugees" flood to Chinese site RedNote, language learning app Duolingo has reported an over 200% spike in people learning Mandarin.

As the hours drew closer to TikTok going dark on Saturday night, many brands took the opportunity to share humor and truths.

The language-learning app Duolingo has seen a surprising trend emerge, the closer we get to the TikTok ban -- there's been a 216% spike in US users learning Mandarin compared to this time last year.

TikTok may be back, but that hasn't prevented other Chinese competitors from gaining users. In the lead up to a ban on TikTok — which kicked off Sunday

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

"I love TikTok so much that I cannot imagine a life without it. And yet I desperately need a life without it."

Yes, the language-learning app has been the big winner amid TikTok’s impending demise and it’s mostly due to spite. According to the app, Duolingo has seen a 216 percent growth in users learning Mandarin Chinese over the last year, which is tied to the growing popularity of RedNote.

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

With the TikTok ban upheld, advertisers are implementing contingency plans. But they hope the app returns as Meta and Google aren't true replacements.

TikTok went dark in the US late on Jan 18, but was back online the next afternoon. Read more at straitstimes.com.