The dragon warrior
(Book)

As a member of the Jade Society, twelve-year-old Faryn Liu dreams of honoring her family and the gods by becoming a warrior. But the Society has shunned Faryn and her brother Alex ever since their father disappeared years ago, forcing them to train in secret. Then, during an errand into San Francisco, Faryn stumbles into a battle with a demon--and helps defeat it. She just might be the fabled Heaven Breaker, a powerful warrior meant to work for the all-mighty deity, the Jade Emperor, by commanding an army of dragons to defeat the demons. That is, if she can prove her worth and find the island of the immortals before the Lunar New Year. With Alex and other unlikely allies at her side, Faryn sets off on a daring quest across Chinatowns. But becoming the Heaven Breaker will require more sacrifices than she first realized. . . What will Faryn be willing to give up to claim her destiny? -- from Amazon.