Video and images carried by North Korean state media showed her right behind her father and ahead of Foreign Minister Choe Son Hui as they got off a train in Beijing, clapping as officials at the North Korean Embassy in Beijing bowed to her father, and standing near him as he was seated with senior officials in a meeting room inside his train.

South Korea’s spy agency said on September 11 that it assesses that the trip solidified her status as her father’s likely heir.

She is believed to be 12 or 13 years old. Not much else is known about her, but her repeated appearances at high-profile events with her father have prompted speculation that she’s being groomed as North Korea’s next leader.

China trip analysed intensively

In a closed-door briefing for politicians, the South Korean National Intelligence Service said Kim Jong Un was believed to have brought his daughter to China to help her acquire overseas experience and cement her status as his likely heir, according to Park Sunwon, who attended the meeting.

The spy agency cited coverage of her appearances in China in the country’s main state TV station and newspaper, which target the ordinary citizens, according to lawmaker Lee Seong Kweun, who was also present at the meeting.

Her name and age are unconfirmed

North Korean state media outlets have never published her name, referring to her as Kim Jong Un’s “respected” or “most beloved” child.

The belief that she is named Ju Ae is based on an account by former NBA champion Dennis Rodman, in which he recalled holding Kim Jong Un’s baby daughter during a trip to Pyongyang in 2013.

Her exact age is unconfirmed but South Korean intelligence officials believe she was born in 2013.

In 2023, South Korea’s spy agency told politicians it assessed Kim Jong Un and his wife Ri Sol Ju also have an older son and a younger third child whose gender is unknown.

She’s being increasingly showcased in her father’s events

Kim Jong Un allowed his daughter to be seen in public for the first time during a test launch of an intercontinental ballistic missile in November 2022.

Photos in state media showed Kim Ju Ae wearing a white coat and red shoes as she watched a soaring missile from a distance and walked hand-in-hand with her father.

Her carefully crafted appearances have included missile tests, military parades, and the launch of a naval destroyer in April.

Kim Jong Un has recently expanded his daughter’s public appearances beyond military events to include some of his most ambitious economic projects and cultural events, including the opening of a beach resort in June.

Some question her chances to take over a male-dominated system

South Korea’s National Intelligence Service issued a careful assessment last year that it views Kim Ju Ae as her father’s likely successor, citing a comprehensive analysis of her public activities and the state protocols provided to her.

However, some outside experts disagree with that assessment, citing Kim Jong Un’s relatively young age and the extremely male-dominated nature of North Korea’s power hierarchy.

In its recent briefing at parliament, the National Intelligence Service assessed that Kim has no major health issues and that he conducted official schedules in China smoothly.

Since its foundation in 1948, North Korea has been successively ruled by male members of the Kim family — Kim’s father, Kim Jong Il, and grandfather, Kim Il Sung.

Kim Jong Un inherited power in late 2011 upon his father’s death.