President Joko Widodo invited Sultan Bolkiah to plant a tree together. In this activity, the two heads of state to plant trees with the Latin name Barringtonia asiatica or known as the tree keben in Presidential Palace, Bogor, West Java
In Indonesia, this tree of keben earned the title of peace tree since 1986 ago. The planting of the trees by the two heads of state signifies the spirit to keep peace between the two countries and the world.