Rather than admiring the view from afar, Deputy International Trade and Industry Minister Ong Kian Ming has urged former premier Najib Abdul Razak to take a closer look at the progress of efforts to clean up several main rivers that flow through Kuala Lumpur.

"How he (Najib) wants to do it is up to him.

"I have done it several times but always on a kayak, not go swimming in the river...