KUALA LUMPUR: DAP secretary-general Lim Guan Eng (pix) has stressed upon Malaysians the importance of upholding national unity and to oppose any form of discord, as the country celebrates its 62nd National Day tomorrow.

In going forward, the nation’s biggest challenge, he said, was in addressing the slander and lies of those who oppose the Pakatan Harapan (PH) government by using racial sentiments and religious extremism.