Of course, whether it's slow or not depends on the person watching.
For Xie Tian, it seems slow, but the speed of improvement in Xie Jun's individual cultivation would shock most people in the Four Immortal Realms.
Not to mention cultivating to the Immortal Realm, the Enlightening Dao Nine Realms is a real uphill battle for top talents, with every step resembling an insurmountable chasm.
Moreover, each Xie Jun practices three types of cultivation in one body, and all of them are heaven-defying cultivation techniques.
To achieve such progress under these circumstances hinges entirely on the cultivation habits Xie Tian instilled in them during their time in the death camp.
However, Xie Tian considers the cultivation of his hundreds of brothers to be slow, not out of disdain but concern.
"Who knows how far the starry path extends, and if they continue..."
He was pondering this when a breakthrough phenomenon suddenly stirred him awake.
"Haha!"
"It's the Leader!"
