It is believed that this pet was available through an iCoke promotion that coincided with the release of World of Warcraft in mainland China. It is assumed that recipients of this promotion were given the choice of this pet or its green counterpart.
Pet Journal
"Legends say that these vibrant emerald beings bring good fortune and safe travels to their owners."
Battles
Dragonkin: Deals 50% additional damage on the next round after bringing a target's health below 50%.