Chudan Hiji Ate is a technique in Kyokushin karate. It translates to 'Mid-Level Elbow Strike.' This technique involves delivering a powerful strike with the elbow to the opponent's midsection or torso region. The term 'Chudan' refers to the mid-level, 'Hiji' indicates the elbow, and 'Ate' refers to the strike. It is commonly used to target the solar plexus, ribs, or abdomen of the opponent with significant force.