Microwave weapons - Havana syndrome (General)
Guess these will get a run in any war in Taiwan. Originally designed to disable electronics, it appears a lower dose can disable humans, without killing them. This is now believed to be the source of ailments reported by US personnel in Havana, which were long considered a 'mystery' (though this guy doesn't think it's mysterious at all, saying the technology has been around since the 1960's).
"The human head acts as a receiving antenna for microwaves in the low gigahertz frequency range. Pulses of microwaves in these frequencies can cause people to hear sounds, ... (suffer) headaches, nausea, hearing loss, lightheadedness and cognitive issues." All these symptoms were reported by the Havana subjects.
The PLA may or may not have used a version of this weapon to retake a mountain top in the Indian border dispute. If so, this would be the first known use in a conflict situation.