According to Jin Yong's The Legend of the Eagle-Shooting Heroes, the author of the Jiu Yin Zhen Jing[1] was Huang Shang, who lived during the Northern Song Dynasty.

Huang Shang was originally a civil servant, but he realized the meaning of martial arts by proofreading the Taoist treatise. Later, Huang Shang was dispatched to eliminate the Ming Sect, the officials and soldiers were incompetent and defeated, Huang Shang was not convinced and single-handedly killed and wounded many people of the Ming Sect, which attracted many of his fellow disciples to seek revenge. Huang Shang was defeated and fled, but all his family members were killed. In order to snow revenge, Huang Shang has been living in seclusion for more than 40 years, thinking hard about the way to crack the enemy's martial arts. More than 40 years later, Huang Shang reappeared in the world, at this time, the enemies are dead, the remaining year a young girl, but also has aged. Huang Shang has seen this, for their own hatred and paranoia, so he wrote his life's work into the "Jiuyin Zhenjing", passed on to future generations.