Astonishing video shows a Korean man jumping across a damaged sky walkway, 50 floors high, to reunite with his wife and daughter on another unstable section of the building.

Thai resident Kwon Young-jun, 36, engaged in the daring act shortly after the 7.7 magnitude earthquake in Myanmar on March 28.

The Thai capital of Bangkok, some 600 miles away, felt widespread shaking and saw significant damage from the quake, including the total collapse of a skyscraper under construction.

Young-jun was exercising in the gym on the 52nd floor of one of three blocks at the Park Origin Thonglor, a condo complex in the city, when disaster struck.

Viral footage shows the walkway bridge of the complex that connects it from one building to another, snapped in half.

Young-jun’s wife, known as Bowyuri and their one-year-old daughter were inside their home on the 30th floor in a neighboring block.

“At the time, my husband, Kwon, was working out at a gym on the 52nd floor of another building … when the building shook, my husband came across the skybridge connecting the buildings to look for me and my daughter. That scene was captured,” Bowyuri told local media.

Incredible footage shows the buildings swaying as Kwon-jun leaps across the broken sky bridge in search for his family.

He then walked down more than 40 floors after he realised everyone had evacuated. He was reunited with his wife and daughter outside the building, according to Singaporean publication, The Straits Times.