The palace is “a place that symbolizes legitimacy of the North Korean regime” and her visit there ahead of the Workers’ Party congress is a politically orchestrated move, said Cheong Seong-Chang, deputy head of the private Sejong Institute in South Korea.

Kim Jong Un, 41, is the third generation of his family to rule North Korea since the country’s foundation in 1948. He often marks key state anniversaries by visiting the Kumsusan palace and paying respect to his father Kim Jong Il and grandfather Kim Il Sung.

Cheong predicted that Kim Jong Un could give his daughter the first secretary post at the Workers’ Party, the party’s No. 2 job, at the congress. Other experts say she is too young to accept such a high-profile post and might be provided with lower-level jobs.

The congress, the first of its kind in five years, is meant to establish new priorities in state policies and reshuffle officials. North Korea hasn’t said when it will hold it, but the National Intelligence Service, South Korea’s spy agency, said it likely will be held either in January or February.