For the Daode Immortal Sect, the Taoist Immortal Scripture is of utmost importance, encompassing many secret techniques and methods of the sect.
It even contains essential descriptions of the Dao Integration Stage.
Therefore,
within the Daode Immortal Sect,
only the Sect Master could cultivate the Taoist Immortal Scripture.
Even though Mu Mengting had stepped into the Refining Void, he could not access the Taoist Immortal Scripture before becoming the Sect Master.
This was a rule and ironclad law of the Daode Immortal Sect, adhered to for hundreds of thousands of years.
However,
Mu Qingliu knew,
that rules were made by men.
His own grandson, with such terrifying aptitude and fearsome power, could be trusted with the Taoist Immortal Scripture without significant risk.
After all, whether it was given or not, Mu Qingliu had no confidence in defeating Lin Yuan.