Chimtoo-Gyeong

Chimtoo means penetration and Gyeong (Jin) means internal power. The strike of Internal Martial Arts has to penetrate through the body. Although a big guy who has strong six pack, the damage of strike has to reach his internal organs penetrating through his muscle. Otherwise, even though you learn lots of skills, they would be useless. Borrow the power from the earth and build internal power. The skills without power are useless.