The fear of NTL(not to land) at Changi, are diverting Tiongs to KLIA; coming in by overland being a safe and cheaper option if rejected at border. And thereafter, to freelancer in Chinatown n Geylang.Very simple. Impose a head tax on every Tiong tourist here. S$50 or S$100.
Remember to emphasize that this only applies to those with a PRC passport. Put up billingual signs everywhere. And tell those at 150 Tanglin Road about it.
The high SES Tiongs who fly here probably won't mind, but the low SES ones coming in via the Tuas Second Link will kick up a fuss and stop coming. Problem solved.