I am still yet to understand this scenes

Was only training her

Really

You need to watch this:

She had to forgo her Stark heritage to become No One before. It was part of her journey in Braavos.

A Faceless Man is no one so they can be anyone. They have no name so they can take on any name. Arya clung to her name until they trained her to have no name.

Looks like game of thrones

They were training her I guess

Omo! This scene had me

Go inside and ask Arya Stark

She was being trained apparently

Which line training