The Greatest of Heroes Works Nine to Five

What is this book about? Is it good?

Spoilers ahead Having read nearly 300 chapters, I noticed that in the first three volumes, because the protagonist's martial arts skills were rather weak (third-rate), the author used a style similar to Wang Yuyan's novel, where the protagonist supported his teammates while they fought. This approach seemed fine at first glance, but starting from the fourth volume, the protagonist gained some combat ability (second-rate), so the author began incorporating classic challenges beyond his level, which was still acceptable. However, in the fourth volume, the protagonist almost sacrificed himself to save his teammates, and then, despite having a strong advantage (a grandmaster's presence that could easily defeat a first-rate opponent), and possessing far superior lightness skills, he fought to the death against his opponent, ultimately barely winning by using all his trump cards. This portrayal of the protagonist in the fourth volume felt very disjointed compared to the strategic and cunning characters of the previous three volumes. Then, in the fifth volume, I found it very strange. The protagonist had already defeated several first-rate opponents, and the author even stated earlier in the fifth volume that defeating weaker first-rate opponents was not a problem. Yet, in his strongest area (strength), the protagonist couldn't even defeat a second-rate opponent (a mechanical engineer). This is understandable, as it's foreseeable for a human to lose in a contest of strength against a machine. But the author also said that "there are quite a few second-rate fighters who can fight the protagonist one-on-one to a draw" (original text), which makes the combat power seem too confusing?

I was speechless when I saw the Xuanwu Zhenjun part. So the protagonist's side is completely unable to deal with a Grandmaster, then how dare you attack? Are you just going to throw your lives away? A group of people couldn't withstand a single move from the opponent, relying entirely on Zuo Hanfeng's self-destruction. The army's baleful aura couldn't keep up with the speed at all. You're just hoping the Grandmaster won't make a move in your attack? Don't even mention the issue of whereabouts. Not long ago, the Grandmaster secretly slipped away to the capital, which means you have absolutely no control over the Grandmaster's whereabouts. How dare you attack? You're just throwing your lives away to advance the plot.

Was this book left unfinished?