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