you can maintain water at temperatures nelow freezing if the pressure is manipulated enough - state of mass changes have just as much to do with pressure as it does with temperature

they definitely don't bathe in -50 degree C water, since that's 50 degrees celsius *below* freezing, which would be ice

They bath in big river, showing their strength in cold winter.

Chinese elder ppl can bath in minus 50 degrees C.

No, 0 degrees C is 32 degrees F

I am European

minus 40 degrees C is the same as minus 40 degrees F