SINGAPORE (AFP) South Koreas Suwon Bluewings and Seongnam Ilhwa stormed into the AFC Champions League quarter-finals on Tuesday, ending Chinas interest in the competition and leaving Japans hanging by a thread. In-form Brazilian Jose Mota again hit the target for Suwon, bagging a brace, as they made the most of home advantage to oust Chinese champions Beijing Guoan 2-0 in the one-leg round of 16 match. Mota was the tournaments deadliest striker in the group stage with seven goals and he added another from a penalty on 25 minutes before sealing the game with his second as the clocked ticked down. In nearby Seongnam, Ilhwa, Koreas most successful club with seven K-League titles, cruised past Japanese powerhouse Gamba Osaka 3-0 with all the goals coming in a devastating final 15 minutes. A 75th minute penalty by former Colombian international Mauricio Molina broke the deadlock before Song Ho-Young scored the decisive second with six minutes left. Gamba, who won the tournament in 2008, were shell-shocked and Molina added to their misery with a third on 90 minutes. Suwons victory ended Chinese hopes of seeing a club in the last eight for the first time since 2006 while Japan now only has J-League champions Kashima Antlers left flying the flag. They play defending champions Pohang Steelers, another Korean side, on Wednesday while 2008 runners-up Adelaide United face the fourth Korean club still in contention, Jeonbuk Motors. In the west zone, Saudi outfit Al Shabab welcome Iranian giants Esteghlal to the 63,000-capacity King Fahd International Stadium in Riyadh later Tuesday, while Qatari champions Al Gharafa host Uzbek heavyweights Pakhtakor in Doha. Saudi champions Al Hilal take on Uzbekistans Bunyodkor on Wednesday while Zobahan play Mes Kerman in an all-Iran clash.