In the hall, not all of the indents and scratches were filled with blood.
Only very specific ones were filled with the blood and once Lin Mu saw all of them, he could make out a very specific shape. It was not like any character or letter he had seen, and neither was it any pattern he was familiar with.
~WEEENG~
The pattern lit up and glowed in a blood red light.
~HUALA~
A very strange energy erupted from the pattern and snuffed out all of the spirit qi in the air. The energy rushed towards Lin Mu and coated his body. Lin Mu could not dodge it and found his control over spirit qi falling rapidly.
"HOW IS THIS POSSIBLE?!" Lin Mu exclaimed.
He could understand if the spirit qi in the air was restrained, but even the spirit qi in his own body was not in his control anymore. His dantian was soon covered in the same strange energy and he was unable to use any spirit qi at this point.