At noon, Erwin had a lavish lunch at Kunlun.
It served as a farewell meal.
Erwin had basically accomplished all the objectives of his trip.
In the afternoon, Sun Doudou found Erwin, carrying a book.
She handed the book to him. "Here, what you wanted!"
Erwin eagerly took it and flipped through the pages.
Then his eyes widened. "Wait, are you sure you gave me the right one?"
Sun Doudou said, "Of course. Your previous physique wouldn't have been able to practice this at all, but now, your body can barely begin to cultivate it!"
Erwin looked at the introductory chapter in the book.
It was practically self-torture.
One needed to have someone batter their body, and then use specific spellart to temper the physical body with mana.
The purpose of the battering was to make the tempering of the mana more thorough.
This stuff felt so strangely familiar.
Chapter 421