Just finished the novel after a pause.
The story is good, op mc, never nerfed and boosted once more only once never more. Very fast faced cultivation compared to the rhythm of the plot, taking time skips as much as IET, as such there were very few instances of dragging the novel with fillers, it's almost a biography of an all powerful legend sang in an ancient pub by a bard. There were only a few times, usually at the end of a saga, where it feels the author was dragging the story compared to previous pacing.
The secondary characters had a very standard personality, almost copy and paste, only changing the name, with the exception of a female character introduced much deep in the story, and some villains who were, admittedly by the author in his own story, senselessly evil. Most likely than not most appeared as background characters without much deepening.
The cultivation is standard up to the immortal realm where its introduced the concept of law and the "heaven-defying comprehension" of the protagonist really kicks in, and further on the cultivation becomes increasingly time consuming, without secret elixirs to cultivate, making the standard breakthrough in 1 year when others take 1 billion years common in the xianxia genre impossible.
The ending was rushed, as if the author regretted the decision to introduce a final world, directly taking the mc to the final realm of cultivation as soon as he sets foot there and then nothing further.