Zhou by knocking off the bridge with a shoulder strike, Zhou began to swallow air with a subtle “Hm!” and channeled all of his energy to his right shoulder. The skin of his shoulder turned red then purple and became hard as rock underneath his clothing. When the two men brushed shoulders, the young man was nearly knocked off of the bridge and the pain caused saliva to pour from his mouth. The attack left him weak in the knees and one side of his body was completely numb. But the incident was a misunderstanding. The young man was none-other-than his future student, the Water Margin bandit Wu Song who was looking down at his feet to avoid large water puddles born from a freak rain shower. X-ray eyes Meeting Zhou Tong by Chance also says, “The moon was shining brightly, everything was clear to see, the old man [Zhou] only had to see half of the man Wu Song, who was standing behind a brick wall]: Here was a truly handsome man, a real masculine person. Just look at his bones and muscles, how well built! Why? Could he even see his bones? Well, what kind of eyes didn't the old master have! Not only could he see through the bones, he could even see through to the marrow of the bones! His eyes were just like the X-rays of our hospitals, he could screen you! The very moment he saw you, he would know...”This is very similar to the skill of the “far-sighted person” as taught to Yue Fei by Zhou. Masters with X-ray eyes appear frequently within Chinese folklore. According to the book To Live As Long As Heaven and Earth: Ge Hong's Traditions of Divine Transcendents, immortals were able to read a person's skeletal structure to tell if they were fated to become immortals themselves. For instance, the Hagiography of the Immortal Wang Yuan () states he was traveling through the Wu state on his way to Mount Guacang when he spied the peasant Cai Jing (). Wang could tell “...his bones and physiognomy indicated that [Cai] was fit for [eventual] transcendence.” Links to other styles Zhou Tong can be linked to numerous other styles through his historical and folklore students. Fanzi Fanzi is an external northern Chinese boxing style known for its rapid punches that are said to be “as fast as lightning and thunderclaps”.