7aum Arivu is a 2011 Indian Tamil science fiction martial arts film written and directed by AR Murugadoss, featuring Suriya and Shruti Haasan in the lead roles and Johnny Tri Nguyen as the main antagonist. The film, produced by Udhayanidhi Stalin began production in May 2010 and was released on 25 October 2011 in Chennai and a day later, on Diwali, worldwide. The visual effects for the film were done by US based Legacy effects, making this their second Indian film after Enthiran.
7aum Arivu received mixed critical response upon release, and opened strongly at the box office. It was also dubbed into Telugu as 7th Sense which released simultaneously along with the Tamil original. The film was also dubbed in Hindi as Chennai v/s China in 2014 as well as in Malayalam with the original title. The film was also one out of several films selected by the South Indian Film Chamber of Commerce for being the Indian submission for Oscar under the Academy Award for Best Foreign Language Film.