This was decided by Zhao Yi.
"In the explosion, the space link device would definitely be damaged, but the spatial connection would not be affected by material interference, so it could be placed underground."
"The Z-wave device, however, must be placed above."
The Z-wave device was the most troublesome.
The Z-wave device had to be placed above, directly linked to the experimental area, but since there was a very high chance of explosions during the experiment, the Z-wave device had to be protected. The protection measures also couldn't interfere with the operation of the Z-wave device.
This was a very challenging task.
The engineering team could only wrap the exterior of the Z-wave device's emission port with thick, high-strength compressed materials, but there was nothing they could do about the interior of the port.
They simply replaced the materials inside the emission port with those of a higher compression ratio.