Miracle Pill Maker Bullies the Boss

What happends with Lu Xia and her mother?
When will her 1st brother know how bitchy the Lu girl is?
Which si the story behind her new family?
Who is the mastermind behind the stolen admision letter?
What other plans will try Lu Xia?
How about her brothers?
Will the Lu brother create problems for her too?
Will Lu Xia cheat at the national Exam? 

I've been reading until chapter 280, i think this novel is slow pace, even the third brother doesn't go home to meet her little sister.

From mtl translate, lu xia is reborn too

The story now just telling the great huo yan making potion, her excellence brain, and Huo family is rich people who live like ordinary people 

That’s what I don’t understand, where does the MC get her knowledge from? I imagine she is from a very high clan (due to her abilities), but where did she transmigrate from? Future, past, a different world? Is it only me that doesn’t know? It can’t be a book world since MC doesn’t have knowledge at first that her family is filthy rich before seeing the hints. I’m lost, will this be mentioned maybe in the future? MTL makes my brain hurt, can anybody give more spoilers? 

What happens later to make the first brother dislike LX and what is her ending? 

she died because some of the pills mc gave her were missing and replaced
oh, song fam got slapped in the face after mc took out evidence that can take their family down and ml being her support. Mc mother also broke her connections with them legally
sorry my memory is blurry 

cant answer your 1st question, sorry.
the hou fam didnt come out yet, but we do know that they are the biggest force in country M. Mc doesnt know yet, she only knows that their family is rich and strong, but she was once asked(indirectly) to be the heir of the family by their uncle 

Which is the story of the song family? MC`s mother family. 

Honestly same MTL makes me wanna rewashed my brain to understand everything