The duo scored a total of 19,550 points.
Competitions of this year’s Championships are taking place from September 3-5 in the beach city of Pattaya. Vietnamese gymnasts are aiming for more gold medals.
In the latest edition in 2017, Vietnam secured two golds, three silvers and one bronze to top the medal tally.
Recently, Vietnam won three gold medals at the 31st SEA Games in May.
One month later, a Vietnamese team won the world championship group title in Portugal./.