"Although the Blue Quality Crimson Iron Ring +6, even if forcibly fused into a Purple Quality Crimson Iron Ring +7, is still a Second-tier Equipment, that will be phased out after the promotion to Fourth Tier, at least it'll still be used for a considerable length of time at Third Tier, so it's definitely worth it to fuse it."
Fusing a Crimson Iron Ring +7 was an easy task for Zhang Yanhang, so, since it could be done effortlessly and would yield more Charm attribute bonuses afterward, it was naturally of great value to Zhang Yanhang.
If it were the kind of task that required Zhang Yanhang to spend a lot of effort and time for only a slight gain, he definitely couldn't be bothered to do it. After all, if the profit efficiency was too low, it was indeed not worth it. He'd rather spend that time on other activities with a higher rate of return.
