If it were in the Small Plane, Duan Gujin would certainly not let those three Martial Saints go easily.
But now they are on the specially crafted territory of the Divine World, and Duan Gujin doesn't know what exactly the Divine World is planning, so he didn't take action.
He doesn't believe that the Divine World would make such a grand gesture to recruit over thirty thousand Small Plane experts above the Martial Saint Realm merely on a whim.
The great enemy of the Divine World, the ruler of the Otherworld Zhao Wuji, is lurking in the thirty thousand Small Planes, and where Zhao Wuji is now is known only to himself.
Duan Gujin concluded that the Divine World's broad recruitment of three thousand Small Plane experts above the Martial Saint Realm should be aimed at Zhao Wuji.
To deal with Zhao Wuji, the Divine World must recruit heavily and prepare its forces.
