Have you ever tried a virtual sport indoor? You can play even if the weather's bad or if you don't have any competitors, and it's even cheaper than the real thing. Relying on simulation technology, virtual sports are getting more and more popular in South Korea. According to recent data, the virtual sport market in South Korea reached 5,000 billion Korean Won last year, approximately 4.6 billion US dollars, a 2.5 times increase in the past four years. | CGTN