With all sorts of doubts in his heart, Jiang Fei did not show himself. Instead, he continued to observe in the dark.
After these intruders had reached the seventh level underground, they did not stop. Instead, they continued to advance forward.
The seventh level underground was already the lowest level of the Life Extension Center. Jiang Fei looked around. There were no more scattered laboratories in the seventh level underground. This place was close to the entrance, there were all kinds of defensive fortifications. It was obvious that the defense of the seventh underground floor was much stronger than the upper floors.
“Da Da Da... Boom Boom...”the sound of gunfire rang again. The Intruders had launched their final attack!
