Please give me the name of a transmigration novel!

I saw it a long time ago, but I want to see it now, but I forgot the name…
He remembered that there was a person called Lan Lingsa. In the beginning, the female protagonist chatted with her friends about transmigration. Later, on the way home, she met a person (who seemed to be a person). He asked the female protagonist if she wanted to transmigrate. The female protagonist later chose a young lady who was not very liked in the residence.
There was a scene where an old man who had a good relationship with the female protagonist gave the female protagonist many useful things. The female protagonist even took the medicine that could give birth to a boy…At first, the female protagonist liked Lan Lingsa. Later, she was schemed by the Fourth Prince, Lan Lingan, who was also Lan Lingsa's brother. Later, the female protagonist got together with Lan Lingan and gave birth to a child.
I've been looking for it for a long time Q_Q

Answer 1

The name of this transmigration novel was " Return to the Ming Dynasty as a Prince ".