First Lady Iriana Jokowi also performed a similar dance after Jokowi. The head of state and his wife were seen wearing the elegant "ulos" traditional woven clothing of Batak.
Bobby Nasution is a member of the Batak clan and is believed to be the seventh descendant of the Nasution king.
The Tortor dance performances by the president and first lady symbolized that they are now members of the Siregar clan.
On the previous day, Ayu was bestowed the Batak clan name Siregar by the kin of Bobby Nasution`s mother, whose family name is Siregar.
Following the main Javanese traditional wedding held in Solo, Central Java, on November 8, 2017, and hosted by the Jokowi family, the Batak family of Bobby Nasution has been holding a Batak traditional wedding ceremony for several days in Medan, North Sumatra.
The main reception in Medan will be organized on Sunday.
Ayu, the only daughter of Jokowi, and Bobby Nasution are both aged 26 and students of the Bogor Institute of Agriculture. The duo had dated for a year and got engaged in June 2017.
Reported by Desca Lidya Natalia