"Peh... peh..."
As the inside of the tunnel had not been smoothed, some areas jutted out from the edges. When Zhang Tie passed one such place, his head against the jut on the ceiling; as a result, some sandy soil dropped off, making Zhang Tie's head dirty all over. Some of the soil even entered Zhang Tie's mouth; therefore, Zhang Tie hurriedly spat it out.
Steel shovel and spade in hand, Zhang Tie moved to the end of this narrow tunnel where he had reached yesterday. With one leg half-knelt down on the ground, he then pulled down his goggles and slightly inserted his steel shovel into the hard and thick soil. As a result, a lot of earth and sand were dug out.
With his great, mammoth strength, in just a few minutes, Zhang Tie had already dug out a great amount of earth and sand and pushed another meter forward.