What's the difference between Taiyi Shenshu and Taiyi Shenshu Tongzong?

Taiyi Shenshu is Taiyi Technique. It is an advanced divination in ancient China. Because it is accurate, it is difficult for ordinary people to learn, so it is called the number of gods. Taiyi, Liu Ren and Daoism are collectively called "three kinds". It is the most advanced divination technology in ancient times.

Taiyi Tang Zong should refer to The Complete Works of Taiyi Tang Zong, a book introducing Taiyi tactics, with 40 volumes of Li Qingzi Ming. Other related books include

Tang Wang Mingxi's Ten Volumes of Taiyi Golden Mirror Sutra

Ten volumes of "You Jing Tai Fu Yi Ying Jing" in Song Dynasty

Yuan 9 volumes "Tai Yi Zong Bao Jian"

Wang Ming He Ming's "Going to the altar will be investigated" Volume III Taiyi Volume I "Collection Taiyi Theory"

Zi Ming Qing Li's "The Freshman Book is Comprehensive" forty volumes.

Minister Taiyi and Song of the Gold Rush —— Integration of ancient and modern books

I hope it helps you.