The Idle Prince and the Buddhist Concubine

Zhen Xi, who had worked hard overtime for half a month, finally died suddenly. When she woke up, she found that she had traveled through time and married into the Moon Prince's Mansion in the place of the fourth lady from an unknown mansion. Zhen Xi couldn't wait to marry into the palace, and wanted to be good friends with them so that she could reach an agreement that she could live in the palace and wait until death. However, the development of all this seemed to be different from what she thought... Why did my brother-in-law propose to me? Isn't it too exciting?