After three days of competition on Sunday, China had led the table with 11 gold, six silver and four bronze medals while Vietnam, had 11 gold, four silver and five bronze medals.
But the Vietnamese's haul yesterday puts them at first and they now lead the 42-country table with 16 gold, 10 silver and 10 bronze medals.
China, meanwhile, have 14 gold, 10 silver and five bronze medals while South Korea are third with seven gold, five silver and five bronze medals.
Vietnam won two gold medals from fin swimming yesterday, with their men's team surface 4x100m and women's team surface 4x200m team emerging victorious.
Meanwhile on Sunday, His Royal Highness Prince Haji Al-Muhtadee Billah, the Crown Prince and Senior Minister at the Prime Minister's Office, made his debut at the Games when he competed in the nine-ball pool singles event at the Phan Dinh Phung Gymnasium in Ho Chi Minh.
The sole athlete to fly the flag for Brunei in cue sports, the Crown Prince eventually fell 1-8 to Indonesia's Muhammad Bewi Simanjuntak.
Besides cue sports, Brunei will also be participating in pencak silat and wushu.
Ten silat exponents are representing the Sultanate in Hanoi while two athletes are flying the flag for wushu.
The silat exponents began their campaign in the seni and tanding events yesterday but the result of their competition at the Haiduong Gymnasium was not available as of Press time.
The wushu events will only start today.
Kicking off on Saturday, Brunei's contingent of 13 athletes left for the 10-day event last Tuesday, with another batch leaving two days later.
Courtesy from Brunei Times