Tunnels accompanied with lots of patriotic Chicom Music.
Note: Tunnel Construction has accelerated in the past 20 years enabled by imported modern industrial equipment which was later copied.
China is not a signatory member of START. And has been producing warheads continuously.
Warheads need to be regularly tested..since electronics wear out over time.
The Billion plus population is more able to sustain damage from a Nuclear War than the 300 million population in the United States.
This is due to the number of people as well as the large amount of Civil Defense Infrastructure.
Also..with such a large population and difficulty feeding it, Chicom Pols probably are not as fazed by the threat of Nuclear War as American Pols would be.
Many of the tunnels are used to shelter trucks which hold mobile missiles. The tunnels do not seem to be designed to withstand direct nuclear hits, but just to shelter the missiles until
they are deployed via road or railroad.
China's Military Power has been growing along with their Economic Power to pay for Military Construction.
they do not have the most sophisticated or reliable weapons...however they are concentrating on sheer numbers being able to overwhelm
enemy defenses. Much the way the United States countered Nazi Germany's technological superiority in most areas such as Aircraft.