At the age of 175: As the effects of the Divine Position begin to manifest, with various Immortal Sect Disciples breaking through their former boundaries using the power of the Divine Position, the Immortal Sects begin to grow restless. They no longer satisfied with possessing only a handful of Divine Positions and desired to attain more of them. But all the rights to confer the Divine Positions were in Pei Xuanjing's control, making it impossible to bypass him in these matters.
In response to the Immortal Sects' demands, Pei Xuanjing didn't reject them outright. He didn't say he couldn't provide more Divine Positions. Instead, he told them that his capabilities were limited at present, and the size of the Divine Dynasty limited the quantity and hierarchy of the Divine Positions, thus he couldn't accede to their demands.