A novel that asks the female protagonist to transmigrate to the modern world

The female protagonist had transmigrated to the modern world. Her parents had died and she had a younger brother or sister. The female protagonist was proficient in music, chess, calligraphy, and painting. She also knew how to make clothes and embroideries herself. After she got together with the male protagonist, she took a fertility pill and was pregnant with four or five babies. The male protagonist seemed to be a soldier and was on a mission. She didn't know that the female protagonist was pregnant. The male protagonist had an older brother. His sister-in-law had been married for many years but she didn't get pregnant. The female protagonist cured her and got pregnant earlier than the female protagonist. The female protagonist was still in university when she got pregnant. Right, the female lead seemed to have transmigrated from the cultivation world to the modern world.