Adapted from Guo Yunshen’s Wikipedia page

Guo Yunshen (1829 – 1898) was a famous Xingyiquan master. He represented the xingyi martial philosophy of preferring to become highly proficient with only a few techniques rather than to be less proficient with many techniques. His skill with one technique Beng Quan was legendary: it was said from him that “with his ‘half-step bengquan’, he could fight anyone under heaven without finding an equal.” (banbu bengquan da yu tianxia wu dishou), and earned the nickname “the steadfast” (bu daota).

One story describes his challenge to bagua master Cheng Tinghua . Cheng invited Guo to dinner. Guo demonstrated his “Divine Crushing Fist”, which Cheng evaded twice. Because of this, he rethought his plan to challenge Dong, knowing him to be a superior practitioner to Cheng.

His teaching was based on the “three truths” (san li), the “three capacities” (san gong), the “three methods” (san fa) and the single/double weight notion (danzhong/shuangzhong) during santishi standing practice. His students should stand still for at least three years before they could learn the forms.

Guo taught famous students like Qian Yantang, Xu Zhanao, Li Kui Yuan and his disciple Sun Lutang. Wang Xiangzhai, founder of dachengquan was his last closed door disciple. Wang Xiangzhai was Guo Yunshen’s nephew. Wang was taught Guo’s traditional Xing Yi Quan. It is stated that Master Guo would instruct young Wang to hold the San Ti posture, without explanation, until a puddle of perspiration formed at his feet. This latter has been publicly revealed “Zhan Zhuang” by Wang Xiangzhai, a term commonly in use throughout the martial community today