Grep Price SBN discusses balance and finding one's center using Nai Han Ji Cho Dan to demonstrate. Frank Bonsignore provides instruction points on the form as well.
Performance tips and learning points by H.C. Hwang. Du Moon is #1 of the Yuk Ro Hyung. This is a demonstration of the complete Du Mun Hyung by Kwan Jang Nim HC Hwang. It also includes learning points...