What Jackie Chan song was downloaded the most?

Jackie Chan is primarily known for his acting and martial arts skills, not his singing. While he has released a few songs throughout his career, it's highly unlikely that any of them achieved significant chart success or download numbers.

Therefore, it's difficult to say which of his songs was "downloaded the most" as there's no reliable source for this information.

If you're interested in specific Jackie Chan songs, it's best to search for them on music platforms like Spotify, Apple Music, or YouTube Music. You can then see their popularity based on their play count or number of views.