you might not know that there is a 'ki gland', in the hand, about a half inch below and between the fourth and fifth fingers. You can look it up in medical journals.
This gland helps increase your ki when you open your fingers. Also, opening the fingers weakens the hand, but strengthens the arm. Your 'unbendable arm' block should be with the arm.
Can you tell me where you learned this gem of info ie Ki gland? What medical journal has this info? Be specific and tell us where to find this reference.May I ask how does opening the fingers weaken the hand/strengthens arm?Please also expand on the subject of unbendable arm.I await your reply with much anticipation. Cheers, Joe.