Bui Thi Thu Thao led home a Vietnamese long jump 1-2 on another day of success for the host nation here at the Asian Beach Games.
Thao leapt 6.32 metres to overcome team-mate Nguyen Thi Truc Mai's best effort of 6.11m.
Sunang Marestella of Philippines finished a centimetre further back in third position.
Vietnam enjoyed a successful morning on Son Thuy Beach as Lê Thị Tú Trinh also claimed victory in the women's 60 metres sprint.
Running on a specially-installed track on the beach, she clocked 7.60sec to edge-out Thailand's Pakdee Khanrutai by 0.13 seconds.
Another home runner, Lệ Thị Mộng Tuyền, finished third in 7.74
Al-Harthi Barakat Mubarak Mabrook of Oman took the gold medal in the corresponding men's event.
He clocked a stunning time of 6.44 to beat Iran’s Ghasemi Reza, in 6.55, and Pan Xinyue of China, who managed 6.77.
The 28-year-old home-grown star has a 100m best of 10.06 run earlier this year.
Samari Ali of Iran claimed men's shot put gold with a best 18.29m to beat the mark of 17.78m reached by Chinese rival Guo Yanxiang.
Vietnam also claimed gold in sepak takraw today.
They won 21-9, 21-15 over Myanmar in the women’s trio event after withstanding a second set fightback.
Myanmar made amends in the subsequent men's final with a 25-23, 21-18 win over Laos.
Pakistan beat arch rivals India in a far closer finish to claim gold in men's kabaddi, 30-28.
The Pakistani players demonstrated high quality kabaddi in the closing part of a thrilling encounter to outshine their opponents in all departments of the game to carve out a hard earned win.