First 'Harry Potter' Film Hits $1-Billion Box Office

"Harry Potter and the Sorcerer's Stone" was first released in 2001.

This week it crossed $1 billion at the global box office.

The film is a huge hit in China, where theaters have started to reopen.

Business Insider reports the movie earned $13.6 million on 16,000 screens in China over the weekend.

It's the second movie in the franchise to hit the milestone, joining "Harry Potter and the Deathly Hallows Part 2."