Two major works were undertaken to facilitate interchange between Kwun Tong Line and East Rail Line. The modification of Kowloon Tong Station started in June 2001. A new pedestrian link to Kowloon Tong Station southern concourse and a new entrance (Exit D) were opened on 15 April 2004 to cope with the increase in interchange passenger flow. Modification to Tsim Sha Tsui Station involved upgrading station facilities and concourse layout to facilitate access from the East Tsim Sha Tsui Station via its pedestrian links. New entrances to the subway links were opened on 19 September 2004 (Exit G) and 30 March 2005 (Exit F), with the whole scheme completed in May 2005.