Although being a knight, Zhang Tie only had an obscure feeling about his cultivation progress. However, he could see his cultivation progress and level clearly on the knight's crystal plate.
Black iron knight's crystal plate was blue. When the knight was going to form his earth chakra, the shape of the chakra would be displayed as a round pattern on a plane. Due to different cultivation methods, some round patterns were simple, some were complex. Now that they were round, they were composed of 360 degrees. That was to say, generally, all the chakras could be divided into 360 smaller parts equally. After lighting the 360 parts, it meant that the knight had formed a new chakra and promoted to the next level.
The 360 parts of a round pattern referred to a concrete division of ranks and cultivation progress.