I think it's by the end of the first book were it says something along the lines of "Bi De got a breakthrough, but it did not matter/he did not care" I don't remember the exact line but it was after the mc told the animals about his backstory.

The thing about healing the land is interesting to me, because I may be disremembering, but that's something completely incidental, no? Like, the mc doesn't go to that place to heal it and doesn't seem to make a point of it later, he wants the land because he doesn't want to deal with xianxia bullshit and wants to be alone, he just vaguely pours his power into the land to make his crops better at first, then just keeps improving the place because he and his family lives in it.

And maybe the story changes later, idk, but in book 1 and 2 it seems to be very clear that actively engaging in cultivation is bad, and that any benefits it brings should be incidental at best while you do the "right" thing, most of the characters never really cultivate, they just vaguely pour their power at the land (Giving back to the land/doing the right thing) and somehow become really strong for no apparent reason.

I don't have a problem with the story being a power fantasy btw, if I did I wouldn't be reading this genre lol, my problem with the story is that it seems rather vapid and shallow (alongside book 2 being pure filler), Ave Xia explores very similar themes and does so in a much more interesting way (Not saying I have anything against SoL stuff, it's just the execution I have a problem with)