Birth of the Obsidian Strings Demon Puppeteer (1)

Before leaving for the academy, Klaus gave Nadia a cultivation technique that was given to him by the senior. 

It was a technique that would allow her to rebuild her cultivation base from the Awakened stage to the Grandmaster stage she had previously achieved. 

Naturally, this should have taken her years, considering she would have to level up again using cores. Thankfully, she had good and wealthy sisters who helped her with the cores. 

During this time, Nadia remained in seclusion, working tirelessly to rebuild her foundation so that she, too, could finally step into the ranks of powerful warriors like the other women around Klaus. 

After many months in seclusion, she had finally reached the bottleneck of the Grandmaster stage and was poised to break through to the Saint stage. 

This, of course, involved undergoing the baptism of the heavenly tribulation.