Searching for an Old Manhua

Hello, been searching around trying all forms of tools and decided to just try my luck with reddit. The Manhua I'm looking for is focused on an MC who was weak in his current time, and was watching the battle of master from afar, (forgive me if I get the facts wrong going forward I only really remember the first few chapters and mainly the childhood arc since it left the biggest impression on me when I first read it).

The MC had strong feelings for the one of the masters (the FL) but due to a truamatic event in her childhood she had a strong aversion and hatred for men, which prevented MC from ever getting close to her.

I think the MC dies from collateral damage due to the masters battle, and awakens back as a child in the well trapped alongside the FL and several other kids. Using what he remembers he eats the moss on the walls to survive and I think he offers some to the FL, and make it his personally mission to protect her so she doesn't gain the trauma again.

At some point the boys in the well attack the girls and start drinking their blood to survive, the MC quickly saves the FL who was one of the victims and kills the boys in the process, leaving only the MC and the half dead FL alive.

From this point the MC puts all his effort into keeping the FL alive be rationing the moss in the well and going as far as giving the FL his own blood to drink when food becomes scarce. Eventually the MC faints from lack of energy and blood, when they are saved by one of the side characters, a "gang?" leader who owns a flying pig demon beast mount, these beast companions are the central focus and main fighting force in this world i'f i'm not getting my stories mixed up.

The Mc will eventually recover and convince the gang leader to work with him in amassing a fortune through trade making use of his flying pig mount to ferry the resources. This is the point where my memory becomes broken for this series because I remember the MC getting a flying serpent beast, and the FL getting a butterfly beast, BUT idr if it was prior to them joining the the school or after, because I remember when they entered the school due to some kind of power grading system the MC was forced to separate from the FL because her grade was like S tier while his was trash, but because of the well event the Fl only trusts the MC and did not want to go to the S tier class but MC convinces her to go, because he wants her to succeed.

He makes use of his knowledge of the future to make up for his lacking power, and get's his hands on powerful resources to help him and his beast get stronger closing the gap and eventually surpassing the Fl, (Though the Fl seems to only put in enough effort so that she and the ML stay even). I for the life of me can't remember the name and any search I use tend to often give me newer manhua with the same beast taming setting but not the right world setting, ( it's in a wuxia type world, ancient china like world) plus it was an old one, I remember reading it back when soul land 1 still only had around/under 350ish chs.

If anyone has any clues or know if any thing like this sound familiar please help me out please, sorry if this is bit long I wanted to make it as detailed but short as possible to help narrow down the possible list.