The image displays 9 human hand techniques, often referred to as "human weapons" in karate. Each technique utilizes a specific part of the hand or wrist as a striking surface, with different applications for power, precision, or targeting soft areas. The nine techniques shown are: Seiken: The standard forefist, using the first two large knuckles for a strong, direct punch. Uraken: A backfist strike, using the back of the top knuckles in a fast, snapping motion. Tettsui: The hammer fist, which st