Japan are on the brink of qualifying for the World Cup after a 3-1 win at China on Tuesday, while Son Heung-min scored again as South Korea were held by Palestine.
Indonesia meanwhile stunned Saudi Arabia 2-0 in Jakarta to boost their unlikely hopes of reaching the tournament in North America in 2026.
Headers from Koki Ogawa and Ko Itakura put runaway group leaders Japan two goals up at half-time, before Lin Liangming pulled one back for China early in the second half.
Ogawa snuffed out China's hopes of a comeback with his second to silence a crowd of 45,000 in Xiamen, where fans without tickets gathered outside the ground to watch the action on their phones.
Loud booing greeted the Japanese national anthem before kick-off and the game was briefly stopped in the first half when a fan invaded the pitch.
"All the players got us this win today," said Japan coach Hajime Moriyasu.
"The players on the pitch, the players on the bench and those that weren't on the bench today -- it was down to their energy that we won."
Japan were playing their first senior international in China in nine years and there is a long history of rivalry between the two countries.
There was a heavy police presence outside the Xiamen Egret Stadium, where about 750 Japan fans were expected to be in attendance.
The convincing victory gave Japan five wins and a draw in Asian qualifying Group C and took them to within touching distance of a place at the World Cup.
However, the rest of the group is incredibly tightly packed, with one point separating Australia in second to China in sixth.
Australia secured a last-gasp 2-2 draw against Bahrain in Riffa, with the Socceroos scoring inside the first minute through Kusini Yengi only for substitute Mahdi Abduljabbar to score twice in three second-half minutes for the hosts.
However, Yengi equalised in the sixth minute of injury-time to grab what could prove a precious point for Tony Popovic's team.
The draw means Australia have the edge in second on seven points, nine back from Japan but one ahead of Indonesia, Saudi, Bahrain and China.
The top two teams in each of the three groups will reach the showpiece in the United States, Canada and Mexico, while those who finish third and fourth go through to a further round of qualifying.
Son denied
In Group B, Palestine -- nominally hosts for a game taking place in Jordan -- grabbed a surprise 12th-minute lead over South Korea thanks to Zaid Qunbar.
The advantage lasted just four minutes, talisman and skipper Son firing in from close range to bring the Koreans level with his 51st goal for his country. Son had a goal chalked off for offside late on.
Despite the 1-1 stalemate, the Koreans are firmly on course for the World Cup at the top of the group, holding a three-point lead with four games to go.
Iraq occupy second on 11 points following a 1-0 victory against Oman in Muscat, while Jordan's 1-1 draw at Kuwait leaves them two points back, in third. Oman sit fourth, on six points, with Kuwait on four and Palestine on three.
In Group A, talented 21-year-old Abbosbek Fayzullaev scored the only goal to give Uzbekistan a 1-0 win over North Korea in Vientiane, the capital of Laos.
It cemented the Uzbeks' place in the top two in the group, along with table-toppers Iran, who were 3-2 winners at Kyrgyzstan.
Third-placed UAE kept on Uzbekistan's coattails with a 5-0 victory against back-to-back Asian champions Qatar in Abu Dhabi, with Fabio De Lima netting four goals.
The win ensures Paulo Bento's side remain three points from second, while Qatar stay fourth, six points off the automatic qualification spots.
North Korea are bottom and yet to win in six games in this phase of qualifying.
