It is very likely that the entry of sweat triggered the earphones to protect themselves, automatically causing the shutdown setting (the white light flashes 3 times when starting up?), making the earphones unable to be turned on again normally.

I can only wait until the sweat dries completely.

Just press and hold the power button for ten seconds to refresh. Or, there may be a situation where the computer cannot be opened temporarily and it will take a few days to open. There is no way around this. Sweat is more harmful than water. It contains salt and will corrode the units or small parts inside. It is recommended that you seek professional and formal after-sales maintenance consultation.