This underground nuclear bunker is a shelter, built during the Cold War era as a refuge against nuclear bombs.
Such nuclear bunkers exist in several major countries, designed as comprehensive structures integrating protection, habitation, and command functionalities. However, note that regardless of the country, the primary function of these bunkers is to defend against nuclear bombs, not infantry attacks.
There are three main ways nuclear bombs are detonated: aerial bombing, ground blast, and underground drilling blast.
Aerial bombing is used primarily against large cities, while ground blasts and underground nuclear explosions caused by drilling are aimed at targets like enemy underground command centers and nuclear missile silos.
Thus, nuclear bunkers and the kinds of tunnels Gao Guang is familiar with are entirely different, and this is good news for Gao Guang.
