North Korean leader Kim Jong-un's teenage daughter, Ju-ae, has paid tribute at the family mausoleum for the first time, reinforcing her image as North Korea's potential successor of the ruling family's "Paektu bloodline," experts said. But some observers said her presence at the mausoleum, along with her appearances at major inspection sites, is part of moves to build a narrative as a possible successor, not a sign that North Korea "formalizes" her status as Kim's successor. Kim Ju-ae, believed to be born in 2013, was seen paying tribute at the Kumsusan Palace of the Sun, where the incumbent leader's late grandfather and father lie in state, together with her father and mother on New Year's Day, according to photos published by the North's state media. It marked her first known visit to the family mausoleum since she appeared in North Korean state media for the first time in November 2022, when she visited the launch site of a Hwasong-17 intercontinental ballistic missile. The Kumsusan Palace of the Sun symbolizes the legacy of the power succession of the ruling Kim's family. Experts said