Arnold turned back to Anku and said in a deep voice, "You didn't tell me that there's a second floor."
When Anku first saw the second floor, he was also surprised. Faced with Arnold's question, he gritted his teeth and snorted.
"I didn't know that there was a second level here. Charlene did not mention this to us."
Arnold said no more.
Soon, the two elite members who had entered the second floor to investigate returned to the first floor and reported, "Team Leader, we've checked. There's a hall on the second floor. It's very messy. There are traces of recent fierce battles."
A serious look flashed across Arnold's face as he nodded. He said, "Let's go in and take a look."
Everyone followed the passage on the ceiling and entered the research hall on the second floor.