The DI, was reportedly affiliated with the Maute Group, whose military authorities confirmed that it has pledged allegiance with the ISIS group network to form a global Islamic caliphate.
The sisterhood agreement was signed in Bandung City to promote cultural, trade and tourism ties between the two emerging cities in the BIMP-EAGA region.
This move comes after Chinese President Xi Jinping met Nobel laureate Aung San Suu Kyi in Beijing earlier this week following China's Belt and Road Forum.