"Such a large cave space, if we want to completely fill it, it won't be an easy task."
Jiang Dali stared gravely at the blueprint for a long while, then looked at Yu Cheng'an.
Yu Cheng'an said, "Actually, completing the filling work is not difficult; the main issue is that it's extremely time-consuming. Our initial material preparation is insufficient, and gathering these materials will take some time.
If we simply use soil and stone to fill, not only would it easily be washed away by water, but it wouldn't withstand the burning and melting from Earth Fire magma eruptions and wouldn't help reinforce the surrounding geology to prevent collapses.
So, the filling material we've recently researched, with Qilin Ore as the main ingredient, is currently the most suitable type.
