When King Jeonggang was dying in 887, he appointed his sister Jinseong as his heir, justifying the choice of a female monarch by pointing at Seondeok's and Jindeok's successful reigns.
[2] Though Seondeok and Jindeok's successful reigns were invoked to help Jinseong secure the throne, Silla's third queen regnant ultimately did not live up to the expectations of her predecessors.
[3] According to the Samguk sagi, Jinseong did licentious conduct that bringing attractive men into the palace and committing lewd acts with them.
The Samguk sagi was written by Confucianists, who held a negative view of female rule, so the precise details therein should perhaps not be taken at face value.
In contrast, according to the records of Ch'oe Ch'i-wŏn, she was a good-hearted monarch with no greed, who accepted his various recommendations to reform the government of Silla to prevent its downfall.