Chan Country, located on the side of Mengjia Bay in the deep mountains, an enormous underground base is situated in a recessed area near the shore.
Beneath the surface, the area here is beyond imagination for people.
The massive mountain is almost hollowed out, with engineering machines built on the Spider Main Battle Mecha chassis coming and going, either lifting, welding, or transporting. There are underground railway tracks and a spectacular road network connecting the outside world, directly reaching several of Jieke Group's heavy industrial bases, providing a continuous supply of material to this secret base.
On February 19th, just the day after Jieke Group declared war on Japan.
