For those who read the previous chapter before editing, hopefully you will read it again, as many changes had happened to it.
Thank you for reading.
...
Christian made a discovery.
Some books, or some kind of knowledge he might need could potentially not be in English. Despite most important resources in the world having an English version, there were still some that did not after all.
Some miscellaneous things, which he might initially consider irrelevant or useless, could actually be crucial for sparking ideas or inspiration for him, during his Idle Practice process.
There could also be some books he needed that weren't available online but existed somewhere out there.
Christian had actually thought about this topic a bit since his bodybuilding skill had reached the intermediate level. However, when the scale of the knowledge related to his skill started expanding, he stopped using his idle slot for it, after all.
