If you want to know what the level of jazz drum level 7 is, you can look at other people’s levels and then compare them yourself. You can also search for relevant videos on self-media to see the playing speed and knocking speed. You can tell the difference between high and low eating points at the door. The same level also has different levels. If you have reached level 7, you can compare it with the same level as level 7. For example, you can feel the difference by comparing it with domestic or foreign drummers. There are also great changes in the level of professional and non-professional students. For example, if a person just starts learning, there will definitely be changes after learning from others for several years.