During the First Seven Days, My Sister Said She Would Come to Pick Me Up.

Sister Qin Yue died of cancer. On the first seven days, Qin Yang went to visit the grave, but he heard his sister's voice saying that she was coming to pick him up! It turns out that Qin Yuehun traveled to the world of immortality and became an unpopular princess. In order to help his sister gain a foothold in the palace, Qin Yang gave her modern technology and hard work. Qin Yue was not idle either. In order to reunite with her brother as soon as possible, she sent back the immortal cultivation techniques and a large number of resources to help Qin Yang embark on the path of cultivating immortals. At first, they just wanted to improve their cultivation as soon as possible and reunite as soon as possible. But the development of things became more and more out of control. Somehow, my sister ended up becoming the empress!