An attendee walks past a venue in Jakarta adorned with traditional Indonesian decorations during the 43rd Association of Southeast Asian Nations (ASEAN) Summit on Sunday. The summit and related events will run through Thursday. Photo: Zhang Ruixue/Caixin

Staff members walk through the venue for the ASEAN Business and Investment Summit on Sunday. Photo: Zhang Ruixue/Caixin

Summit volunteers take a group selfie in front of a mirror. Photo: Zhang Ruixue/Caixin

Advertisements for the summit line a street in Jakarta. Photo: Zhang Ruixue/Caixin

A person in a Doraemon costume waves to passing vehicles on Sunday. Photo: Zhang Ruixue/Caixin

Visitors take sightseeing tours in Jakarta on Sunday. Photo: Zhang Ruixue/Caixin

A mother poses for a photo with her children. Photo: Zhang Ruixue/Caixin

Young people chat on the street in Jakarta on Sunday night. Indonesia, with approximately 280 million people, is the world’s fourth-most populous country and has a significant youth population. The median age in Indonesia is 29.9 years, according to data released by the U.N. Photo: Zhang Ruixue/Caixin

People navigate a street filled with parked scooters in Jakarta on Sunday. Photo: Zhang Ruixue/Caixin