Zachary Ying and the Dragon Emperor by Xiran Jay Zhao

Zachary Ying never had many opportunities to learn about his Chinese heritage. His single mom was busy enough making sure they got by, and his schools never taught anything except Western history and myths. So Zack is woefully unprepared when he discovers he was born to host the spirit of the First Emperor of China for a vital mission: sealing the leaking portal to the Chinese underworld before the upcoming Ghost Month blows it wide open… Read more.