PETALING JAYA: The real test starts now for Lee Zii Jia. As expected, the world No. 9 has set up a mouth-watering showdown with reigning champion Chen Long of China in the last 16 today. If his imperious form when he outplayed Frenchman Brice Leverdez to emerge champion of Group M yesterday is anything to go by, expect his clash with the Chinese to be an explosive one. Zii Jia gave the 35-year-old Leverdez absolutely no chance with his power and speed, winning the match 21-17, 21-5 in just 35 minutes. Chen Long, 32, should have warmed up well enough after picking up a routine 21-11, 21-10 win over Spaniard Pablo Abian to advance from Group N.