In the coming two days, Ye Mo wasn't immersed in cultivation. His Heart Minion had already been tempered to the point of reaching fivefold attack. If he wanted to progress more, he needed fourth-order fourth-tier and above seals to temper the Heart Minion. Or he had to refine fourth-order fourth-tier seals himself. Otherwise, nothing he could do would help grow the Heart Minion any longer.
For example, after defeating a fifth tier expert, one would need to practice against a sixth tier to get stronger. That was how the Heart Minion operated.
After he researched the 20 seals using the seal effects to temper the Heart Minion, he was now familiar with all 20 of the seals.
The seal that interested him the most was an offensive seal known as the Landslide Seal. After being activated, he could place his hand on the ground to cause a landslide, catching his opponent by surprise.