Waiting for some time, Mystogan eventually began to move to a place where he could view his student's progress. Walking up the opposite side of the tree, and walking so that he could stand on the underside of a branch overhanging the boy, Mystogan looked down and watched as the boy continued to concentrate. As it began to get dark out, Mystogan eventually decided to see how far the boy's training was coming.
Oi! That ought to be enough time for you... Now you get to put your chakra molding abilities to use.
First, you will need to channel your chakra to the soles of your feet. Following this, you will then attempt to walk directly up the side of this tree. Your chakra in your feet act with a sort of adhesive property, holding you onto the tree as you walk. This exercise is all about balance and proper chakra control; too much chakra, and you'll slip off of the tree, but too much chakra, and your chakra will violently push you away. So why don't you take this-
Pulling out a kunai, Mystogan threw it at the ground next to his student.
-and use it to mark how high you get, and then challenge yourself to beat that height. We can move on once you have reached my height.