Ye Wudao calmed his excited heart, used the principles of the Bone Shrinking Skill, and quickly squeezed into the passage, slowly moving forward.
Because the passage inside was really too small, Ye Wudao had to adjust his shoulder bones position every step he took, which was an excruciating process.
The principle of the Bone Shrinking Skill doesn't actually make one smaller, which would be impossible. It merely involves adjusting the position of one's bones to give the appearance of becoming smaller.
Put simply, Ye Wudao dislocated his shoulder bones to get through and then repositioned them afterwards, akin to the principle of some contortionist techniques.
A true contortionist master could make their whole body as soft as boneless, but Ye Wudao was not a contortionist master lacking any alternative, he could only endure this self-torturing method to get through.
