Tian'an's face changed dramatically upon hearing the words, and he looked up at the rooftop of the factory building ahead.

In the darkness, a shadowy figure could be vaguely seen rushing forward. With a powerful push off the eaves, it swooped down towards Tian'an like a hunting falcon.

This person was none other than Lei, who had been waiting on the rooftop. The moment Tian'an stepped outside the factory, Lei sensed it and immediately launched a deadly attack on him.

Tian'an was startled, realizing that a Xuan Realm martial artist had indeed come, judging from the terrifying speed of the opponent.