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.
The Chinese government pledged a total of USD 24 billion soft loan assistance to the Philippines to fast-track the construction of infrastructure projects that will boost the economy.