Back in college, he used to go through a lot of calculation paper every day. Now, however, with the advent of specialized electronic devices that feel just like paper, it's incredibly convenient. After writing, with the press of a button, the page would become clean again, and all the content was stored in the computer. Using this gadget was a real timesaver.
Because of his disciple training method, he was not only physically fit, but his spirit was also strong. He did not tire from physical labor, nor from mental exertion.
The mathematics of magic technology were easy to understand but hard to get right; it was clear at first glance, but mistakes were made upon attempting to calculate. While it was quite easy to understand the principles and concepts in the reference books, the actual application resulted in a litany of errors. Without practicing for days or even weeks on end, it was impossible to master.
