What's the name of a Korean drama without marriage registration?

Marriage ban. According to Netease News Network.

1. The marriage injunction tells the story of the Korean era. Li Xianwang issued a marriage prohibition order because he lost his beloved prince and princess. In the past seven years, people all over the country were forbidden to get married, so there were many men who hated women, and paranormal phenomena appeared frequently in the palace. At this time, Rui Sunniang, a fortune teller like a wand, not only secretly married, but also pretended to be able to communicate with ghosts, went to the palace to deal with strange things, and even had an unexpected development with the king.

2. The Marriage Prohibition Order is a love drama in ancient costume directed by Park Shangyu and Zheng Xun, written by Qian Zhi and starring Park Zhuxuan, Jin Yongda and Kim Yu-seok. It premiered on MBC TV in South Korea on February 9, 2022.