Former Heir of Zhenbei Marquisate, only legitimate son of Gu Yan. Once the most admired young man in Luoyang, ranked first in palace examinations since age seventeen, known for his simple elegance in white robes and jade crown. After his father's rebellion failed, he was stripped of title and reduced to commoner, with a crippled right leg and a jagged scar across his face. He was held as a hostage at the Imperial Academy since age seventeen. His wife Lin Wan died a month before the story begins. He died in winter of the sixth year of Taiwu.
