There was a once a one-armed instructor training a young student, but the instructor was getting beat.
He approached Calasanz and asked for training. Calasanz agreed. Within half a year Calasanz disciplined the one-armed student. Above all, Calasanz taught him how to learn. A constructive lesson was applied without punching or kicking. This lesson was done with less than one minute of sparring.
To be continued…