Also known as the "Falchion" (Da Dao), Lower Moon Knife" or the "Kwan Knife" (Kwan Dao).
The form consists of 30 postures.

The movements are arranged in a systematic way. They postures are: chop, cut, poke, parry, thrust, intercept, press, push, slice, block and swing in figure-8 form, which are conducted very clearly.

As is evident from it's size and weight, this weapon is used to train whole body strength. When practicing, the practitioner must have a sound command of barehands routine skills, and should have strong and powerful waist, legs and arms.