Xbox.com offers Xbox Live Gold members: Battlefield 4: China Rising DLC Pack on Xbox One or Xbox 360 for Free. Thanks raven70
PlayStation Store has Battlefield 4: China Rising DLC Pack on PS4 or PS3 for Free.
EA Origin has Battlefield 4: China Rising DLC Pack (PC Digital Download) for Free.
Editor's Notes & Price Research
For an in-depth look at the Battlefield 4: China Rising DLC Pack, head over to EuroGamer ~RevOne
The PlayStation Store and EA's own Origin will catch up later today/early morning tomorrow.
Already free in Europe on European Xbox Marketplace
(may be free for Gold already/previously on XBox, but not certain)
US Xbox One later today
US Xbox 360 page (already free for Gold)
Playstation 4 Page when price updates later today
Playstation 3 Page when price updates later today
EA Origins PC later today