Great Tang: My Identity as Crown Prince Has Been Exposed

At the beginning of the tenth year of the Zhenguan era, Li Qi, the heir whom Li Shimin had placed great hopes in, died and was buried in a mausoleum on Mount Nan. The following month, his body vanished without a trace. Eight years later, a man who looked exactly like Li Qi appeared in Gusu City. Conspiracy, family bonds, human nature, and death entwine in a bewildering mystery. What lies hidden in the darkness?