C209 Improvement complete

"Good boy, this sh * t can even explode! It sounds so disgusting! " Old Seven chuckled, then grinned, not knowing how to reply to Wan Lilang.

"Brother Seven, these feces have been piling up for so long, they must have turned into fermenting methane, so Wan Lilang's method is theoretically feasible." I nodded my head. Universal Waves was indeed a high-level figure