Beijing's sign-off is one of the hurdles Trump needed to clear to keep TikTok open.
Congress had orderedthe app shut down for U.S. users by January 2025 if its U.S. assets weren't sold by Chinese owner ByteDance.
Trump has declined to enforce the law while his administration looks for a new owner, but also because he worries a ban on the app would anger TikTok's huge user base and disrupt political communications.
"I like TikTok; it helped get me elected," Trump said during a press conference on Thursday. "TikTok has tremendous value. The United States has that value in its hand because we're the ones that have to approve it."