🌀Old Kungfu Masters demonstrates of Ancient Qi Gong "Iron Crotch"🌀 "Iron Crotch" (铁裆功- Tiě dāng gōng) is a rare, 300-year-old branch of Chinese qigong and martial arts, famously practiced by masters in Juntun village, Henan province, to demonstrate extreme body hardening. It involves using specific breathing techniques and internal energy (Qi) to harden the scrotum area, allowing it to withstand direct, high-impact strikes from heavy objects, such as a 40 kg (88 lb) steel-capped log, without c