During a recent family trip to Vietnam -- the first since Angelina Jolie adopted Pax from an orphanage near Ho Chi Min City on 2007, the 8-year-old spent some time getting to know his biological grandmother Nhan Dung.
"It was a one day visit," an insider tells the new Us Weekly, on stands now. "Nhan was looking forward to it after Pax had lived so many years abroad."
Jolie, 36, and longtime love Brad Pitt arranged for Dung to visit Pax at the seaside Six Sense resort in Con Dao, where the gang stayed during their trip.
Earlier this year, Jolie told the Financial Times why she and Pitt, 47 emphasize educating their children about their native countries. "They are all learning about each other's cultures as well as being proud of their own," she said. "They all have their flags over their beds and their individual pride."
In addition to Pax, the couple are parents to two adopted children (Maddox, 10, and Zahara, 6) and three biological children (Shiloh, 5, and 3-year-old twins Vivienne and Knox.)
For more on the Jolie-Pitts trip to Vietnam and Pax's reunion with his biological grandmother, check out the new Us Weekly, on stands now!