It's called a bioweapon you lying little commie and the probably didn't intend on releasing it on themselves. They probably planned on sneaking it into the USA and then locking down china
Releasing it on themselves would make sense since it attacked the elderly. Getting people to have more kids mean a nice young army...especially if they can get them to abort females. Which is what I think they did at one time....which left them with less “breeders”.