3X13X1 3X1 3X1 () is a Hong Kong television drama series produced by HK Television Entertainment, and broadcast by ViuTV. The series is the second self-made drama series to be aired on ViuTV, and it premiered on 25 July 2016. Synopsis. The story is set in a Hong Kong that is facing a worsening economic climate, and it revolves around a retail space that is leased to three businesses, each operating during a different time of the day. The businesses include: Each episode deals exclusively with one of the three businesses, with limited crossover between the characters. 3X1 3X1 () is a