There are many versions of Yijinjing circulated among the people, and even there are more than 60 versions in Shaolin Temple! Most of these Yijin Scriptures were fabricated by later generations based on their own experience and only a few words. For example, the Yijin Jing promoted by the State Sports General Administration was also compiled by several people.

The oldest, most comprehensive and authentic Yijinjing should be the Yijinjing handed down by Master Jinjiazhou, a branch of Yangzhou Yijinjing. His Yijinjing was kept secret in ancient times, which well preserved the authenticity of Yijinjing techniques and was a standard internal skill, including Yijinjing fitness qigong, Yijinjing hard qigong, Yijinjing fighting and so on! You can search his Yijinjing video online, and learn his Yijinjing is authentic.