Shaolin monks hone their kung fu skills in the courtyard of the Shaolin Monastery. Murals in the White Hall of the Shaolin Temple.

Authentic Shaolin Heritage: Training Methods of Shaolin Monks

72 Arts of Shaolin: (12) Hand - a Bamboo Leaf

ZHU YE SHOU GONG

Hand - a Bamboo Leaf | Brief Description 

Excerpt from the book: Jin Jing Zhong. Authentic Shaolin Heritage: Training Methods of 72 Arts of Shaolin >
The exercise "Hand - a Bamboo Leaf" is hard external Shaolin exercise, also called "The Palm Rotating in Sand" (FAN SHA ZHANG). It is one the kinds of Shaolin GONG FU specializing in strengthening the striking surfaces of a palm. There is some similarity with "Horse's Saddle" (MA AN GONG), the exercise for a fist, and with "Making Holes in Stones" (DIAN SHI GONG), the exercise that is aimed at strengthening and training of fingers. Those exercises make up so called "Deadly arm" (SHA SHOU)...
A full description of the training procedure is available in the book: Training Methods of 72 Arts of Shaolin >

...When you freely deliver blows with your palms on the whole surface of the bag and you don't feel tired, it means that GONGFU has reached unsurpassed mastership. It will take about 3 or 4 years. If, after finishing your training, you strike with your hand at an object, it will break, if you strike at an enemy, you will seriously injure him. It is necessary to train both right and left hands.

72 Arts of Shaolin: (12) Hand - a Bamboo Leaf

72 ARTS OF SHAOLIN | Brief Descriptions

(1) Diamond Finger - (2) Twin Lock - (3) Striking with Foot  (4) Pulling out Nails - (5) Ringing Round a Tree - (6 ) Four-Part Exercise - (7) One Finger of Chan Meditation - (8) Iron Head - (9) Iron Shirt - (10) A Series of Blows - (11) Sweeping with an Iron Broom - (12) Hand - a Bamboo Leaf (13) Jumping Centipede - (14) Raising a Weight of 1000 JINs - (15) Celestial’s Palm - (16) Method of Hardness and Softness - (17) Cinnabar Palm - (18) Lying Tiger - (19) Swimming and Diving Skill - (20) Sluice Shutter weighing 1000 JINs - (21) Covering with a Gold Bell - (22) Finger Lock - (23) Luohan’s Exercise - (24) Lizard Climbs the Wall - (25) The Art of Lash - (26) PIPA - (27) The Pole of a Falling Star - (28) Poles of Plum Bloom - (29) The Art of Stone Padlock - (30) Skill of the Iron Arm - (31) Fist like a Bullet - (32) Soft Bones - (33) Frog - (34) Piercing the Curtain - (35) The Force of Eagle’s Claws - (36) Iron Bull - (37) Skill of Eagle Wings - (38) Hand of Sun Rays - (39) Exercise for Groin - (40) Iron Bag - (41) Method that Reveals the Truth - (42) Skill of Tortoise Back - (43) Skill of Deft Jumps - (44) Skill of Light Body - (45) Iron Knees - (46) Technique of Jumps - (47) Palm of Iron Sand - (48) Pulling a Silk Thread - (49) Method of drawing in YIN - (50) Rubbing and Thrusts - (51) Stone Pile - (52) Neither Lances nor Broadswords Can Wound - (53) Gong Fu Flight - (54) Hand of Five Poisons - (55) Skill of Water Separation - (56) To Fly Up to the Ridge and to Walk on a Wall - (57) Skill of Somersaulting - (58) Pole of Cypress - (59) Ba Wang’s Elbow - (60) Pinching a Flower - (61) Pushing a Mountain with Palm - (62) Technique of Horse Saddle - (63) Skill of Nephrite Belt - (64) YIN Fist Method - (65) Skill of Sand Bags - (66) Piercing Through Stones - (67) Pulling Out a Mountain - (68) Claws of Mantis - (69) Gong Fu Bag - (70) Palm of Guan Yin - (71) Raising a Pot - (72) Rubbing Palms