In the Shaolin version of Iron Shirt, the practitioner would do things such as lying on a stump or supporting tablets of granite on the chest with the goal of toughening the body.
According to 13th generation lineage Tai He ("Great Harmony") Wudangquan Master Fan Ke Ping (Chinese: 范克平), a collector of rare Kung fu manuals, Zhou Tong, the archery teacher of General Yue Fei, practiced Shènzi bādà Qígōng (Chinese: 肾子八大奇功 - "Testicle Eight Outstanding Techniques").
[1] Other styles include the Hǔ Xiào Jīn Zhōng Zhào (Chinese: 虎啸金钟罩 – “Tiger Shouting Golden Bell Exercise"), Tie Bu Shan ("Five Phoenix Iron Shirt Work") and the Wu Feng Qi Ming Gui Xi Su ("Five Phoenix Combined Shouting Tortoise Resting Method").
During the Ming Dynasty, Daoist Priest Deng Kun Lun (Chinese: 邓坤伦) is fabled to have learned the set and later published a book in 1426 called Dà Sòng Quān Nèi Dì Yī Gāo Shǒu Zhōu Tóng Zhēn Chuán Hǔ Xiào Jīn Zhōng Zhào Fú Qì Liàn Xíng Mì Shù (Chinese: 大宋圈内第一高手周侗真传虎啸金钟罩服气炼形秘术 - “Great Song Circle Internal Sequence First Master Zhou Tong True Line Tiger Shouting Golden Bell Exercise Build Secret Technique”).
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.