He'd score his first goal in the next year during the 2012 AFC Challenge Cup against the Philippines after poking in a spill from Neil Etheridge four minutes after coming on.

During a World Cup Qualifier match against Uzbekistan on 16 June 2015, he scored his third for the nation after his late run into the box met a cross for a powerful header.

Jang scored his fourth international goal against Chinese Taipei during the 2019 EAFF Championship qualifiers when he nodded in Jong Il-gwan's cross into the box.

Jang played an instrumental role for his nation's triumph in the 2019 Intercontinental Cup but didn't take part in the final due to suspension.

The decision led to frustration that was carried over after the game ended as Jang was seen remonstrating at the referee Rustam Lutfullin.

On September 10 2024, Jang received a red card against Qatar National Football Team in Round 3 of World Cup Qualification, after denying an obvious goal scoring opportunity, tackling Akram Afif in the box.