Tendons and bones are singing together, which is a kind of physical realm.

To do this, first of all, we need to have full control over our body. After we have mastered our body completely, we should make our bones and muscles tremble together and make a tremorous sound, that is, the sound of bones and muscles.

In fact, we need to achieve the unity of muscles and bones, even if we have exercised a little physical warrior, we can easily do this.

But even if all the muscles and bones are in harmony, there are different realms.

Generally speaking, as long as the warrior can completely control his flesh...