Haisoku Chudan Mawashi Geri is a technique in Kyokushin karate. It translates to 'Instep Mid-Level Roundhouse Kick.' This technique involves executing a roundhouse kick with the instep to target the opponent's midsection or torso. The term 'Haisoku' refers to the instep, 'Chudan' indicates the mid-level, 'Mawashi' means roundhouse, and 'Geri' refers to the kick. It is commonly used to strike the opponent's abdomen or ribs with precision and force.