First of all, his physical strength has increased by at least one level, which is one-tenth; don't underestimate this one-tenth, for someone at Su Chen's level, getting stronger by one-tenth could possibly double his combat power.
Besides that, his Divine Mansion, obviously, has become more robust in terms of aura by three points, walking on the path of evolution, although it is still far, far away from true evolution.
Then, his realm, within the time of a stick of incense burning, unknowingly and naturally, progressed from the Fixed Character Eternal Domain Sixth Layer directly into the Broken Eternal Realm Third Level, upgrading six or seven minor realms as easily as eating and drinking water.
Of course, the greatest benefit is still Xi's devouring.
Xi devoured over 22 million 'red' creatures.
Xi is simply Xi's nemesis.
Su Chen can feel Xi's satisfaction.
And Xi indeed fed back a lot of the pure energy he dreamed of.
