Shi Yu was tired.
Not only because he had to work overtime for a week, but also because upgrading the skill proficiency seemed like an endless journey.
This skill proficiency was at the entry level in one try, proficient level in two tries, expert level in four tries. This was already more than ten tries, why wasn't it perfect level yet?
Shi Yu suspected that the skill index was messing with his mentality.
According to his mathematical thinking, he couldn't guess what the index was thinking.
Otherwise, logically speaking, expert+4 should be perfect level already.
"Perfect level isn't as simple as I thought…"
After thinking about it carefully, Shi Yu gave up.
After all, from entry level to expert level, as long as the pet trained hard, it could ignore the problem of potential and talent.
And to reach perfect proficiency… There were areas that some pets, even Beast Tamer's pets, might not be able to reach in their lifetime.
