After Xiang Shaoyun, Lei Bao, Zhan Wushuang, and Yu Ziyang gathered four keys together, locating the final key was supposed to be much easier. But when they tried detecting the final key with their keys, they received no response, unlike their previous attempts.

While everyone was confused, Lei Bao said with a frown, "The final key has either been destroyed or sealed by someone using a unique method. This is troublesome."

"Wait, so we won't be able to gather all five keys because of this?" Zhan Wushuang asked.

"If we keep failing to get a response, finding the fifth key will be harder than scaling the sky," said Lei Bao.

Everyone's expression turned ghastly. It hadn't been...