931 Terrifying Nether World!

However, Li Yao did not fly Neltharion through the tiny entrance of the ventilation tube recklessly. Instead, he triggered a beam of probe mystic rays and scanned the bar while he adjusted the frequency of the mystic ray.

As he expected, when he adjusted the mystic ray to an extremely low frequency, dozens of mysterious lines appeared on the bars, which interconnected with each other and were moving without any pattern.

Should Neltharion touch the crimson lights, an alert system would certainly be triggered.

This is truly a heavily guarded place!

Neltharion was halted below the entrance of the ventilation tube for five seconds while Li Yao calculated the speed and the angle of the mysterious lines quickly.

Five seconds later, Neltharion passed through the bars unhurriedly like a lazy goldfish. The crimson lines seemed be cooperating with the device and always missed it by the width of hair!