link:Chinese Troops Made Food, Hotpot With Missile Fuel: Ex-PLA Officer (businessinsider.com)

Even the earlier gen liquid-fuelled military rocket didn't use hard-to-store cryogenic or semi-cryogenic fuel(like kerosene& LO2) which have low degree of readiness. The storable liquid fuels(&oxidizer) are toxic and dangerous to handle.

link: Hypergolic propellant - Wikipedia

"Disadvantages[edit]

......The corrosivity, toxicity, and carcinogenicity of traditional hypergolics necessitate expensive safety precautions.^[11][12] Failure to follow adequate safety procedures with an exceptionally dangerous UDMH-nitric acid propellant mixture nicknamed "Devil's Venom", for example, resulted in the deadliest rocketry accident in history, the Nedelin catastrophe.^[13] ...."

link:Most toxic rocket fuel | Guinness World Records

"Unsurprisingly for rocket fuel, hydrazine is also extremely flammable. It is what is called a "hypergolic" fuel, meaning that it ignites on contact with its oxidizer (typically dinitrogen tetroxide, but also sometimes the almost-as-toxic red-fuming nitric acid). It also ignites on contact with most acidic substances, many kinds of metal, and porous materials such as cloth or wood. Its flames are extremely hot, but totally transparent, and therefore invisible to the human eye.

The first vehicle to use hydrazine was the German Me-163 rocket-powered fighter aircraft. While the rocket provided excellent performance, fuel leaks and accidental explosions reportedly killed more pilots than enemy action. The combination of UDMH and RFNA was referred to as "devil venom" by Soviet engineers. It apparently smells of fish, but but getting close enough to smell it is extremely inadvisable.

Despite its many risks, hydrazine and its derivatives are still used because they are generally stable over a wide range of temperatures when stored correctly..."