However, she had just advanced a few levels and even crossed a realm. She couldn't go into seclusion because doing that will only increase the spiritual energy in her dantian and cause her to advance again.
Therefore, engaging in battle with strong opponents could help her consolidate her strength and maintain a solid foundation. Even though the soul energy crystal had helped her with purifying her spiritual energy and stabilizing her realm, it could not compare to the results of a battle.
Using her spiritual power to fight, especially if she drains it and recovers through cultivation several times could help her in ensuring a solid foundation and stable cultivation.
That was the reason that even though her light energy could finish these zombies quickly, she chose to fight.
She was also amazed by how strong these level three zombies are. Even though she was holding back her strength, she was surprised that they could still hold their own against her.
