keep your cool/ Without an how -do- you- do , quick as an wink

從容處理deal with it calmly,keep your cool

泰然處之：not bat an eyelid  and not bat an eye

Fig. to show no signs of distress even when something bad happens or something shocking is said. Sam didn't bat an eyelid when the mechanic told him how much the car repairs would cost. The pain of the broken arm must have hurt Sally terribly, but she did not bat an eyelid.

 

Without an how -do- you- do , quick as an wink