His dizzying strength has been honed through years of practicing centuries-old martial art Thien Mon Dao.
Thang, 28, is one of an increasing number of Vietnamese to find refuge in a sport that grew out of a need to protect the country from invaders, but now offers a route to mental wellbeing in the rapidly changing nation.
Practitioners of Thien Mon Dao have long taken pride in the incredible shows of strength that form part of their routines.
The eye-popping feats include bending metal against their bodies, carrying heavy objects using their throats and lying under the path of motorbikes.
Now many say they also take pleasure from how the sport - which includes elements of self-defense, kung fu and weapons training - has steered them on a new course.
A spectator touches an iron bar bent around the head of a student of the centuries-old martial art of Thien Mon Dao at the Hoan Kiem lake in Hanoi. Photo by AFP/Manan Vatsyayana. |
Thang, a furniture seller who first began practicing eight years ago, said he used to get into fights in high school and was also a gambler.
"Once I stole money from my family but after that, I was brought to Thien Mon Dao by my family and I changed," he told AFP.
"There are so many benefits: I learned how to express my ideas, how to walk properly and behave."
Thien Mon Dao has roots going back to the 10th century, according to master Nguyen Khac Phan, whose school trains in the complex of an ornate temple on the outskirts of Hanoi. But he says the first official practice of the sport was recorded in the 18th century.
In recent years it's seen a surge in popularity, he adds, with up to three new clubs set up in the capital each year.
Vietnam currently has around 30,000 Thien Mon Dao practitioners across the country, Phan estimates, with occasional public performances helping boost the sport's appeal.
Master Nguyen Khac Phan (front) leads students through a training class in centuries-old martial art Thien Mon Dao inside the Bach Linh temple compound at Du Xa Thuong village in Hanoi. Photo by AFP/Manan Vatsyayana. |
"People come for different purposes but mostly they want to improve their health and mental health," added Phan, who has been teaching the sport since the early 1990s.
"Learning martial arts can help people see life in a better way, improve their strength... give up their mistakes to aim for better things," he said.
From tiny children who have barely started school to people in their eighties, Thien Mon Dao embraces anyone who wants to kick their way up through 18 different levels and seven belts.
Sixteen-year-old Vu Thi Ngoc Diep, one of around 10 women training at the temple compound, said the sport had also given her a way to fight gender stereotypes.
"Southeast Asian people think that girls should be gentle and not suitable for learning martial arts," she said. "But I see it differently."