Primer: Jade
The substance known as Jade is, simply put, quite unlike any other substance that exists on Earth.
All available evidence points to Jade being extraterrestrial in origin; the first reports of Jade were in 1967, shortly after a meteor crashed in Henan province, which was heavily contested by the participants of the Chinese Civil War. Apparently, both sides were able to secure samples of Jade during this time, sufficient for them to start cultivating the material in larger quantities.
Jade--so called for its resemblance to the green rock--has several unique properties that no other known substance has exhibited to date. Almost nothing is known of the theoretical underpinnings behind Jade's structure or why it exhibits the behaviour it does; the substance simply does not fit into any of our existing models of physics. The focus of Chinese researchers was largely on finding practical applications for the crystalline green substance, in any case.
Distinctive properties of Jade:
1. Jade has the ability to self replicate. The way this works is that the crystal will leech matter from its surroundings, before converting the mass into more Jade through an exotic subatomic process. This process is indiscriminate and makes no distinction between organic and inorganic matter; this particular discovery was only made after multiple people were affected as a result of careless exposure to the substance. Though this replication process is fairly slow, with the proper catalysts it can be greatly accelerated, a fact that allowed the KMT and the CCP were able to build up large stockpiles of the material in a fairly short period of time; this later allowed them to expedite the mass production of atomic bombs when Jade's fissile properties were discovered.
2. To date, Jade is the only true fissile material known to man. The theoretical basis of fission is nothing new, but prior to the discovery of Jade it had long since been dismissed as an impractical idea, a field of research only pursued by quacks and lunatics. Needless to say, the discovery of Jade changed the equation, at least for the participants of the Chinese Civil War. Once this landmark discovery was made, both sides were quick to see the potential wartime applications, and also the danger if their enemies managed to develop a working atomic bomb first. The development of a working atomic bomb quickly became the priority of research on both sides.
3. When bombarded with sufficiently intense electromagnetic radiation, Jade has been known to exhibit highly unusual behaviour. Moreover, there is reason to believe that this behaviour may vary depending on the wavelength of EM radiation used. Fragmentary records from the war suggest that the Communists did attempt to explore this particular phenomenon further; however, the same records also suggest that the researchers involved had barely managed to scratch the surface when the Communist leadership ordered all available resources diverted to the atomic bomb project.
Notes: Who the hell is writing this in-universe? Fuck if I know. TL;DR it's Tiberium, only it spreads a lot more slowly and has all the fun properties of uranium.
And yes this is self indulgent nonsense but please forgive me.
I'll probably call the vote sometime tomorrow when I wake up, because I really need to get some sleep right now.