The economy is largely based on timber extraction from the extensive tropical rainforest.

Agriculture is relatively minor, with oil palm and pepper the main products.

From there, he proceeded to West Malaysia, Sumatra and the Dutch East Indies.

Wong explored the lower valley and upper reaches of the Rejang River.

In those days of the Rajahs, Sarawak was sparsely populated with vast land yet to be developed, Wong's plan was timely and very much appreciated.

When Wong went to see Sir Charles Brooke and explained to him his plan to lead large groups of Foochows to open up Sibu for cultivation, the Rajah immediately agreed.