South Korea’s family-run conglomerates – or chaebols – have been big drivers of economic growth, and because of that they’ve largely been seen as untouchable. Until now. The chaebols are being challenged, at a time when the stakes have potentially never been higher, with the country mired in political turmoil.

On today’s Big Take Asia Podcast, Rebecca Choong Wilkins talks to Bloomberg reporter Youkyung Lee about how a surprise takeover bid for one of the world’s biggest refined metal producers, Korea Zinc, is sending a chill through the chaebol world.

Read more: Powerful Families Who Dominate South Korea Face an Investor Revolt

Further listening: The Six Hours of Martial Law That Stunned South Korea