If you want to work hard to collect books, you can say…
In ordinary city life, there were not that many demons and Trascendent for him to absorb.
Perhaps he would have to wait until he entered the border before he could truly obtain a comprehensive improvement.
Now, he could only focus on a few more important and commonly used skills.
"Other than that, it's also troublesome to increase your profession level."
Su Mo thought to himself,"
"Upgrading from Tier 3 to Tier 4 requires 50,000 Experience Books.
Even if it was calculated according to the ratio of 150 books out of 100.
It would cost about 33,000 lifespan.
It was equivalent to killing 330 Tier 4 players.
With my strength, it's not impossible.
Even though it was very strenuous at first, the more I killed, the stronger I became and the faster I killed.
This was a snowball-like exponential increase.
The problem was that they couldn't find so many level 4 monsters."