Shi Xuejin's lecture was almost two hours in total. At that time, Lu Shu realized that when he was teaching pure cultivation theories, he could easily make reference to other sources of information to support his point, making all concepts easily understandable.
But actually, Lu Shu only needed to know one thing. The Heavenly Network had adopted a creepy shortcut by speeding up their students' ascension to Class C, just so that they could contribute to increasing the overall fighting ability of the Network. However, besides comprehension, foundation was essential in the breakthrough to Class B as well. At the current stage, the students could no longer solely rely on the absorption of Spirit Qi and the completion of cycles for leveling up, which made Class B unattainable for them all.