Junior Negrao's brace sent Ulsan through where they will face a Vissel squad that barely eked out a win over Suwon.
Former champions Ulsan will face Beijing while Kobe's quarterfinal debut will be against two-time title holders Suwon.
Beijing Guoan FC's lone goal held up against FC Tokyo as Melbourne Victory will rue their missed chances to advance against Ulsan.
Beijing Guoan FC and FC Tokyo highlight the first 2020 AFC Champions League Round of 16 matches on December 6.
Melbourne's 2-1 win over FC Seoul puts the Victory into the AFC Champions League's knockout stages for the first time since 2016.
Melbourne will face FC Seoul for the group's final spot in the Round of 16 as Chiangrai's first Champs League campaign winds down.
Brazilian forward Bill scored twice as Chiangrai United sunk South Korea's FC Seoul 2-1 Friday for their first-ever AFC Champions League win.
Melbourne Victory's hopes of getting past the Asian Champions League group stage are hanging by a thread after suffering a 2-0 loss to Beijing FC.
Chiangrai United faced a rude awakening as they ran up against FC Seoul while Shanghai Shenhua's wholesale line change led to a slim win over Tokyo.
Beijing FC's stars proved Melbourne Victory's undoing as the A-League club slumped to a 3-1 defeat in their return to Asian Champions League action.
Ulsan FC continued their dominant run in group play with a convincing win over Shanghai Shenhua while Beijing barely beat a depleted FC Seoul.
Football officials are confident that China's Champions League teams will be able to travel to Qatar when the competition resumes next week.
Beijing Guoan continue to lead the Chinese Super League standings following a 3-2 win over Guangzhou R&F on Saturday.
Renato Augusto earned Beijing Guoan a share of the points as Sunday's top-of-the-table clash with Shandong Luneng ended in a 1-1 draw.
Beijing Guoan held off a late rally from Tianjin Quanjian on Sunday to secure a 3-2 win that moved back them back to the summit of the CSL.
Jonathan Viera's 87th-minute strike earned Beijing Guoan a 2-1 win over Henan Jianye to reach summit for first time since 2015.
Cedric Bakambu scored late to pull Beijing Guoan level with Chinese Super League leaders Shanghai SIPG atop the table.
Cedric Bakambu helped rescue a point for Beijing Guoan as Roger Schmidt's side fought back to draw 3-3 with Chongqing Lifan on Sunday evening.
Cosmin Olaroiu's winning start to life in the Chinese Super League continued on Friday as he led Jiangsu Suning to a 2-0 win over Guangzhou R&F.
Beijing Guoan handed newly promoted city rivals Beijing Renhe a 4-0 thrashing as Roger Schmidt's men claimed a third CSL win win in a row.
Nicolas Gaitan was taken to hospital as a precaution after being knocked out during Dalian Yifang's 3-0 defeat at the hands of Beijing Guoan.
Bakambu, who left Villarreal in January after his €40 million buyout clause was triggered, had been on a winter training camp with Beijing.
Las Palmas have sold Spanish winger Jonathan Viera to Chinese Super League side Beijing Guoan, the La Liga club announced on Monday afternoon.
Bakambu, who left Villarreal in January, has been on a winter training camp with Beijing Sinobo Guoan, who he is set to join for €40 million.
The Chinese Football Association will try to curb clubs' attempts to avoid paying levies on large transfer fees for foreign players.