Although the explosion took place within a vertical shaft, the depth classified this nuclear detonation as an enclosed underground nuclear explosion. After the explosion, a cavity would form around the blast site, and shockwaves, compression waves, and seismic waves would be transmitted to the surrounding soil medium.
Yang Yi and the others were at a distance from both epicenters which was sufficient to ensure their safety, as the radioactive materials from an enclosed nuclear explosion would be buried deep underground and would not spew out too much.
But the strong tremors were still enough to throw Yang Yi and his companions into the air. Although not very high, it was enough to make him lose his balance.
Yang Yi fell to the ground, then he rolled over to lie on his back, looking up at the Serpent People's mothership that obscured the sky.
It didn't seem any different, so did the well cap hit the mothership or not?