It's Not Easy to Be a Man After Travelling to the Future (WN) - Chapter 1307: Little White Has Disappeared.

I was a genius in the Earthen Plane.

“Missus, time to fulfil your duties!” Mu Yuchen demanded as he pulled Xi Xiaye closer with his arms intimately wrapped around her waist.

It was a meticulously planned feast for the powerful. Her fiancé had knelt down on one knee and proposed to her sister instead. Robbed of her right to her inheritance, she was prepared for the Xi family to throw her to the wolves.
As she slipped away from her family that had turned their backs on her, she found him — Mu Yuchen, the low-profile and reserved noble that ruled City Z and led Glory World Corporation.

“Mu Yuchen, let’s get married!” He looked up at her, then suddenly stood up.

“Where are you going?”

“Let’s go. Any later and the civil affairs bureau will be closed.”

- Description from Novelupdates

“Wait... Where am I and... who am i?”Just after he thought he was successfully betrayed and killed by his most favored surbodinate. Taylor finds himself on the floor of a remote alley“Don't tell me I got reincarnated?” Hutton muttered with a look of disbelief on his face.P.S; Join the novel discord server for any announcements or questions and answers sections

All Chu Lian had done was to read a book where the female lead had cheated on her wonderful husband. While wondering why, before she knew it, she was waking up in the body of that very same female lead!

Wait, did that mean the handsome husband from the book was hers now? Chu Lian decided to welcome him with open arms!

However, what she got wasn’t the kind husband she had been expecting. Instead, his personality seemed to have been completely flipped! He left her all alone on their wedding night… and just five days into their marriage, her dear husband abandoned his loving wife and left to enlist in the army!

Fine! Be that way! She could pass her days perfectly well somehow, even if she had to do it alone!

Chu Lian put her household in order, charmed the rest of her new family, and did a little business on the side. She even opened up some new trade routes! Her days passed peacefully and leisurely… Until her dear husband got into trouble at the frontline of the war.

Hmph, isn’t he crawling back to me for help in the end? Forget it, I’ll go save him myself!