January 1st.
Wanfa University City, 19th underground level.
Director Lin looked expressionlessly at Zhang Yu before him and said blandly, "In 3 hours, tunnel through the pathway shown in the blueprint, and I will consider you to have passed this test."
Zhang Yu nodded slightly, walked towards the entrance of the tunnel, and the next moment, as his palm seals changed, streams of sand and mud started peeling off from the tunnel by themselves.
In the blink of an eye, the entrance of the tunnel began to extend inward at a speed visible to the naked eye.
At the same time, Zhang Yu's left palm changed seals, and abruptly lifted upwards.
Streams of metal powder gushed out from underground, transforming into simple metal frameworks that coordinated with the reshaped cave to stabilize the internal space.
One after another, Zhang Yu thrust his palm towards the tunnel, advancing one step with each strike, progressing amidst the tremors and roars of the earth.
