C3029 All the Channels

"Professor, don't slip. Look carefully." Chu Yan said as he marked.

Li Si:... ""

Since when was it your turn to teach me a lesson?

But this time, li Si was much more serious.

He stared at all of Chu Yan's marks and looked again.

In secret, he was somewhat familiar with these markings.

This was... a dao channel?

He saw the Sage Emperor's 36.

Not only that.

All these years