Read manhua A Song Dwelling In The Clouds: Love Inside The Cage / 云想之歌笼中之恋

From INKR: As a girl arrives at a new school, she encounters a boy who seems to be hostile towards her. She also meets a gentle-looking man, who sends her and the hostile boy in the past. Now the two have to adapt to their new lifestyle and find a way back to the present
https://teenmanhua.com/manga/a-song-dwelling-in-the-clouds-love-inside-the-cage