The influx of more than 700,000 new users has been driven by a looming U.S. ban on TikTok, used by 170 million Americans, on national security concerns.

BEIJING (Reuters) -Chinese social media app RedNote has been thrust into the limelight after more than half a million TikTok users recently joined the platform in protest against a likely imminent ban on the short video app in the United States.

Trump has said he has a "warm spot" for the app, a distinct change of heart after his first administration first called for a ban on TikTok.

Chinese President Xi Jinping and U.S. President-elect Donald Trump held their first phone talks in four years Friday. According to Trump, he spoke with Xi about TikTok, just hours before the Supreme upheld a law set to ban the social media platform in the United States in less than 48 hours.

U.S. President-elect Donald Trump and Chinese President Xi Jinping discussed issues including TikTok, trade and Taiwan in a phone call on Friday, just days before Trump takes office again promising tariffs that could ratchet up tensions between the world's two biggest economies.