9 yin shen gong was compiled by Huang Shang from thousands of loose scrolls containing information on everything from inner power to healing techniques to Taoist philosophy.
9 yang shen gong was developed by a Buddhist monk after reading 9 Yin.
9 yin and 9 yang is pretty much on par with each other.
Z3F was a martial arts genius and came up with Chun Yang Wu Ji Gong from studying Taoism.
How does Chun Yang Wu Ji Gong compare to 9 Yin and 9 Yang? Was it as strong and comparable to 9 yin and yang?