Sorry for the late reply, but I only just got back from a much needed vaca
Master Su is in China right now, so the class is on hiatus until he returns. I'm hoping it will be soon, but I don't have an exact date just yet.
A brief bio of Master Su:
Grandmaster Li Zhi Su was born in December 11th, 1948. He started martial arts career when he was six years old, learning Shaolin Kung Fu and Tai Chi Chuan under his father. In 1962 he was accepted as second generation inner disciple by Shang style Xing Yi (a branch of Hebei Hsing-I) (尚氏形意) grandmaster Li Wenbin (李文彬one of ten most famous martial arts teacher [中国十大武术名师] in China) and started to learn Xing Yi and Taiji. Grandmaster Li Wenbin is one of the last inner disciples of XingYi Legendary master Shang YunXiang (尚云祥the founder of Shang style Xing Yi)
Su is the vice president of the Institute of Shang Style Xingyiquan, committee member of Wushu Association of Liaoning Province, head of the committee of Traditional Wushu Association of Liaoning Province, the chairperson of Wushu Association of Dandong City. Su Lizhi is holding an 8 duan (dan) in Chinese martial arts of Wushu Association of China.
The Santi is very challenging. It's hard to hold properly for even 5 minutes, let alone 10
I'll post an update as soon as I know when master Su will be returning. If you have any questions, feel free to post or PM