Terrifying Thickness, The Unprecedented 490mm

Once his ideas had connected, the following plan swiftly emerged in Su Mo's mind as smoothly as flowing water.

Through the use of the Mountain and Sea Painting Scroll card in the ruins of time previously, Su Mo had already become completely familiar with the topography of the 300 kilometers surrounding the Underground Shelter. 

If there were no issues in the talisman's simulation of the disaster, within ten minutes, the water in the areas nearby the Underground Shelter would accumulate to a depth of ten meters.

The sunken terrain of the low-lying land aside—which was the main reason water would accumulate there—the plains would be flooded with water at least eight meters deep on the first day itself.

Within 300 kilometers, if he followed along the west side and kept going upward, the topography would get higher to a certain extent—but for this monstrous flood disaster, it was entirely insufficient!