You’ve only just got used to hearing about 4K TV and now some people are talking about 8K. But what the hell is it? What makes 8K different to 4K? And do you need it? Or is it worth waiting a while ...

Meanwhile, Jisoo's Kang Young Joo showcases her bravery, fearlessly tackling obstacles head-on, from decapitating zombies with an electric chainsaw to fending off an armed group of men.