Traveling Through HP, I Rely on My Voice to Save the World

I don't know if there will be a side story without CP in the main text, because I'm not very good at writing emotional lines, and I don't know how to write an introduction. Anyway, the general plot is as follows: I had just finished the college entrance examination and had not even enjoyed a few days of vacation when I sadly time-traveled to the world of HP. I recognized it from the fanfic I had recently read. Good news: I know the general plot Bad news: I only know the general plot The worse news is: I have to start school all over again for seven years; as a partial subject, I can't understand every word I'm saying; I can't understand every word; Better news: There is a system, and the system is easy to fool (cross out) and easy to get along with. So Liu Siyun started a happy (and chaotic) HP life. I just don't know why my inner voice was leaked. System: Yes, I don't know why (pointing fingers with a guilty conscience) Later, she discovered that things were not that simple. The inexplicable kindness and inexplicable malice left her a little confused... Lightning protection The gold finger is thick and thick, the hostess is not kind, her mouth is unclean, and her heart is even more unclean. Currently, the voices of those whose voices can be heard include GGAD, the Dean of the Fourth Hospital, the Savior Small Group, Gemini, Qiu Sai, and Draco Small Group (excluding the Foodie Gaoke Group). I am a newbie, but I have read a lot of novels, but the writing is not necessarily good. To be honest, the ones I read are incomprehensible. If you don't want to read them, just don't read them. Don't scold me, I'm afraid I have a glassy heart. Also, when I write the names of the protagonists, I write them in rhyme, but when they are called, it is definitely more in line with their language habits. If they are called out, it will be Serena Lau.