Here's what happened.
After Wu Meiting married Han Wenxuan, their marriage existence was merely nominal. Wu Meiting threw a tantrum on their wedding day, which Han Wenxuan could not tolerate, and he ran out later. Wu Meiting heard from someone that he went to see Mu Xiangwan that day.
Han Wenxuan was the groom that day, yet he had the audacity to attend Mu Xiangwan's memorial service. How could Wu Meiting possibly let this humiliation slide?
As a result, they constantly bickered after their wedding. They lived under the same roof but barely spoke to each other, and they had never shared a bed.
Han Wenxuan had just entered the family business, and he worked overtime every day to achieve something, so his father would no longer look down on him. He also conveniently used Wu family connections, and he really did make some progress in the past few months. As his career thrived, he swamped himself in work and came home very late every day.