C355 Zhao Dagang Was Shameless and the Two Girls Were Furious(1)

Su Yuan truly worked wonders. In just one night, she led her team to completely clean the trench that had been eroded by strong acid, leaving no trace of any substances that could harm humans.

Though the details of her method were unclear, the trench factory was now back in operation.

For added security, scouts were stationed on the peaks of the eastern and western mountains