Who are Mrs. North Korea and Mrs. Guo Rong in Wu Meiniang?

Madam (AD 579-670) Yang was born in the imperial clan of the Sui Dynasty, her father was, and her uncle was the Sui King. Wu Zetian's mother, Wu Shun, and his wife Guo, according to historical records, Yang and his grandson Helan had an incestuous relationship. Wu Shun, the wife of a North Korean, is the father of the founding emperor of the Tang Dynasty and the wife of the motherland, Yang. She is Wu Zetian's sister.

Wu Shunchu married Helan Yueshi and gave birth to a boy and a girl. The son is Helan and the daughter is Helan's wife. After the death of Yueshi in Helan, because Wu Zetian was in the palace, Wu Shun often went out into the palace and committed adultery with Li Zhi in Tang Gaozong. Her daughter was also loved by Emperor Gaozong. After Wu Shun's death, Mrs. Zheng was posthumously presented. According to the Book of Old Tang Dynasty, it was once widely rumored in the palace that Prince Li Xian was born to her.