Angelina Jolieis paying tribute to her son Maddox Jolie-Pitt in a very special way!

The 40-year-old actress traveled to her eldest son’s birth country, Cambodia, earlier this week to visit her two charitable organizations and begin production on her next film, an adaptation of Loung Ung‘s memoir First They Killed My Father: A Daughter of Cambodia Remembers.

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Angelina visiting the Maddox Jolie-Pitt Foundation on July 28.

According to The Associated Press, Angelina will receive updates on her two charities, the Maddox Jolie-Pitt Foundation and the Maddox Chivan Children’s Center, during her trip. The mom-of-six adopted Maddox, 13, from Cambodia in 2002.

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Pre-production on the star’s new film — which she will direct, produce and co-write — is expected to last until November with shooting scheduled of take place from November to January 2016.

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Angelina with Maddox in May2003.

Maddox will also play a part in the production of the flick, which will detail author Ung’s memories of growing up under the Khmer Rouge regime’s genocide during the 1970s. “Maddox will be on set every day after school and involved behind the scenes,” Angelina told the AP.

“As Maddox and I prepare the film we will be side by side learning about his country. He is turning 14 next week and this is a very important time for him to understand who he is. He is my son but he is also a son of Cambodia. This is the time for our family to understand all that that means to him and to us. My desire to tell this story in the most truthful and accurate way possible will be my tribute to the strength and dignity of all Cambodian people,” she added during her interview with the news outlet on July 28.