I REFER to Mr Chan Mia Lee's letter, 'Why the delay in upgrading opposition ward?' (April 8), and would like to highlight that the lift upgrading projects in Potong Pasir and Hougang are on track. Blocks 101 to 109 in Potong Pasir Avenue 1, and Blocks 351, 352, and 354 to 357 in Hougang Avenue 7 were announced for the Lift Upgrading Programme (LUP) last October. As with all LUP projects, the HDB...