[5] According to other assumptions, it is also possible that the origin of the name of Kampong Kupang was based on history through the voyage of the 5th Sultan of Brunei, Sultan Bolkiah around 1473 to 1521, telling about the frequency of his diligent travels and stops in the archipelago such as the islands of Java, Sumatra, Kalimantan and included in the land of the Philippines.

While in Java, Sultan Bolkiah was able to see the culture and observe the way the Javanese live their daily life activities such as farming known as the Kedayan tribe.

Pottery pieces from the Song (960–1290), Ming (1368–1644), and Qing (1644–1911) dynasties, as well as Siamese, European, and indigenous ceramics, are abundant in this region.

In addition, artifacts including animal bones, beads, iron, wood, resin, copper objects, and coins from the Qing Dynasty were discovered.

Since the area's excavations started in 1977, researchers have been unable to ascertain the degree to which Brunei's early history was shaped by the Kupang Canal.

Based mainly on the examination of Sung Dynasty ceramics unearthed in the area, it is probable that the site had already decline when Awang Alak Betatar arrived.

Pottery pieces from the Song (960–1290), Ming (1368–1644), and Qing (1644–1911) dynasties, as well as Siamese, European, and indigenous ceramics, are abundant in this region.

In addition, artifacts including animal bones, beads, iron, wood, resin, copper objects, and coins from the Qing Dynasty were discovered.

Since the area's excavations started in 1977, researchers have been unable to ascertain the degree to which Brunei's early history was shaped by the Kupang Canal.

Based mainly on the examination of Sung Dynasty ceramics unearthed in the area, it is probable that the site had already decline when Awang Alak Betatar arrived.