Garden of the Purple Dragon

My book is "Garden of the Purple Dragon". The time period is during the Han Dynasty, in China. It starts off with a girl named Ping as she observe the distance but also place her with a dragon  named Kai she has to take care of. she decide a great place to take the baby dragon is the Black Dragon Pool. the man character seem to be Ping. from there along journey is about to began. they're going to run into people who will discover Kai.