Was there any recommendation book about the female protagonist traveling through the ancient times, the princess's physical body being unable to enter, the bouncing pipa, the aphrodisiac, and the male protagonist saving her with blood and finally connecting their fates?

The male lead is an immortal
The male protagonist disappeared. She used her child to prevent the female protagonist from dying. The female protagonist returned to the modern world and gave birth to two children.

Answer 1

Let me recommend you an ancient romance novel called "The Adorable Wife: The Dragon King's Peerless Concubine". The story mainly revolved around the female lead, Yun Ranran. She was a top secret agent in the 21st century, but after transmigrating, she became an ugly, good-for-nothing young lady from ancient times and was even drugged. When she was weak and powerless, the male protagonist, the Dragon King, appeared and saved her with his own blood. From then on, their fates were closely linked and a story of mutual love began. I hope you like this novel. Muah ~