The whole underground system is very dark. However, the two patrol members who Shen Shi-san laid out first, equipped with lighting tools, were carried by Shen Shi-san and Zhang Meng. Now, they play a role in the tunnel.

By means of illumination, it travels fast in the tunnel.

Li Tiejun's pointer also played an indispensable role this time. They rushed to the periphery of the tunnel in a certain direction.

And just as they were running for a while, the tunnel suddenly became bright, and it was clear that the other side had started its own power supply.

The tunnel brightened up, which made Shen XIXIII quicken their pace, because...