Because after the man with a mask let out a slight gasp, he quickly raised his head and spoke.
"I have divined where this fish bone comes from."
Shu Guan, of course, was not boasting; he truly had seen the Heavenly Secrets.
Initially, those Heavenly Secrets seemed as though obscured by some force, blurry and unclear, and that force didn't appear to be man-made. Shu Guan couldn't discern what precisely was affecting the clarity of the Heavenly Secrets, which was why he let out that light gasp.
However, soon under the power of Daoist Skill in the One Palm Scripture, those forces that veiled the truth of the Heavenly Secrets like curtains were directly torn aside by One Palm Scripture.
Perhaps to Danyang Zi, the power obscuring the Heavenly Secrets was so formidable that he could spend a lot of time without breaking through, but for Shu Guan, it was as effortless as drawing curtains aside.