"After the Grey Maned Arm Guard was fused to +4, the bonus that the additional attributes provided to Physical Recovery Speed increased from 17.5% to 20%, a further increase of 2.5%. Not bad, it finally reached 20%.
Thus, originally I needed 10 hours of rest after working 11 hours and 45 minutes, but now I can work for 12 hours and then rest for 10 hours. I can work an extra 15 minutes before resting. As long as this continuous exploitation goes on, having a work-rest ratio of three to two is indeed promising, at least it's already six to five now."
However, achieving a three to two work-rest ratio with just one Grey Maned Arm Guard would definitely not be enough, even if I can continue to enhance it through fusion.