That night, before going out to meet Nitocris as Ice, Kyle had to knock Xing Han out. He didn't want Xing Han to know that he was going out, for Xing Han would definitely ask a million questions or insist on following.
Kyle couldn't have either.
So he simply put Xing Han into deep sleep, to ensure that he wouldn't wake up or be aware that he wasn't inside the room. Kyle didn't like using drugs, so utilising the pressure points and hypnotism was the best way to go.
Though some may say that playing with the mind and nerves was just as bad. Kyle disagreed, for his method didn't have any side effects nor long term effects. It was simply him 'persuading' the brain to do certain things.
Once done, and he was sure that Xing Han was asleep, Kyle changed into 'Ice'. This time, he wore his mask. Since Big Bro Nic asked for his help, it meant he would need to be incognito anyway. It certainly saved him from having to do the tedious make-up.