During my working life, I have reported to a few bosses. Some were 'monster' boss or tekan kings or queens. They wack you upside down and inside out and make you lose all your cocky confidence.
If you come out of their torture chamber smiling and surviving, congratulations you made it through the '36 luo han chamber'. This is a very famous movie when I was a little boy. In Shaolin temple, if a monk or disciple wants to 'graduate' and leave the temple, they have to prove themselves that their kungfu are ready for the tough outside world. They have to fight their way through the 36 chambers and must be able to pass all of them before you can go and see the outside world.
Same for the monster boss, they will throw you the toughest project they can find or volunteer you to other siong team or ......