Qi Tian spent a thousand low-grade spirit stones to buy it, and then threw it into the storage chamber of the Heavenly Dao Engine. Without waiting for Qi Tian's approval, the Heavenly Dao Engine directly absorbed the blackened pan bottom. Afterwards, Qi Tian was pleasantly surprised to find that after a year had passed, the Heavenly Dao Engine once again successfully upgraded, adding another blade above the turbine. In addition to this, several runes appeared on the body of the Heavenly Dao Engine, making it seem even more substantial, stable, and reliable.
The second item Qi Tian bought was a tattered cloak, which he also used the Heavenly Dao Engine's Spirit Qi sensing function to detect. He felt a strong fluctuation of Spirit Qi on this cloak that seemed like it could be torn by a mere breeze, so he spent one hundred and fifty thousand low-grade spirit stones to purchase it.