Skill Upgrade

Although Dai Li was muttering his complaint, he was satisfied with this reward item from the bottom of his heart. Athlete patches were the reward that would bring essential changes. The cost of 10,000 points of experience might be high, but the earnings were far beyond that cost.

After some transient surprise and delight, Dai Li then put patches aside and looked at another reward item. No one would be unfamiliar with it, if he or she had studied at a primary school: an extra book cover used to wrap up the textbook. But there was no design except for two big words on it: cover upgrade.

Cover? Upgrade? He didn't know what it meant.