I will be mentioning some important points that might help you decide whether or not to read this story.
SPOILERS WARNING FOR FUTURE EVENTS! (Not explicit)
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Summarized:
1) The MC is calm and tolerant, not like most Chinese MCs, but has a bottom line.
2) The MC will not seek to antagonize Xiao Yan actively, his attitude will be indifferent.
3) The MC will not follow the same path as Xiao Yan.
4) The story is slow-paced at the beginning.
5) There will be some OC's, especially in the first major arc.
6) The time will come when the MC will actively influence the original story.
7) The love interests are very relevant to the story, in the future very powerful, and will be of great help to the MC. (If you want spoilers of who they are check the comment in chapter 2 where I answer that).
8) The Life Simulator System will simulate a maximum of 10 years ahead.
Long version:
1) The Protagonist:
The MC unlike most Chinese MC's, usually thinks things through calmly and will not jump at the slightest provocation, he has quite a bit of tolerance, but also will not hesitate with those who have crossed the line.
He's not perfect, but you definitely won't think he has a hole in his head.
This story is not based on walking the same path as Xiao Yan and stealing his chances, this is the story of Xiao Ming (MC of this story) and he is going to walk his own path, so some OCs might appear especially in the first major arc, of course then during his adventures he will influence the original story more and more.
The MC will not actively antagonize the original protagonist (Xiao Yan) of the story, whether they become enemies in the future will depend on Xiao Yan's actions.
2) Pace of the story
The MC has good talent and a quite useful system, however, the development especially in the first 50 chapters will be slow-paced, as the MC needs to practice his techniques, learn alchemy and go out to look for his own opportunities that will be the basis that will make him very powerful in the near future.
After all that, despite being considered a powerhouse, he won't ruin the story with an invincible MC, his power level will be consistent and his adventures interesting.
So if you are looking for an OP MC from the start this is not your thing.
3)Love interests
Love interests will be very relevant to the future story, the MC will not actively seek a relationship, it will happen based on circumstances, however, the main emphasis of the story is on the adventure, so take love interests as travel companions and a great help for the MC.