Chapter 642: Entering the Zone of Thunder

"How impressive?" Zhu Xuan Er asked.

Ling Han thought for a moment, then said seriously, "There are differences in strength for even spirits developed by the world. To rank Thunder Spirits in terms of power, Heaven Cloud Purple Thunder could be ranked amongst the top ten, so it's very powerful."

"Then how would the big rock man and Strange Fire be ranked?" Zhu Xuan Er was curious. Only when there was something to compare against would there be a clearer understanding.

Ling Han made a rough comparison, and said, "Small Rock, at most, can be ranked in the top hundred, and Strange Fire couldn't even be counted in the top hundred before, but after… being refined, it should be able to rank in the top hundred."

Only now did Zhu Xuan Er's expression change. Merely those being ranked in the top hundred had such great power, so how powerful would a spirit ranked in the top ten be?