How long I will love you follows Gu Xiao-Jiao, a young woman in 2018 trying to invade the lifestyle of the rich and infamous before losing all her money in a fraud. In 1999, Lu Ming is a property designer who is desperate to make his mark on the world. When their apartments merge and suddenly wake up in the same bed, they try to make changes to change their destinations. However, a mysterious man controls his fate behind the scenes. At one level, the film can probably be read as a call for a return to simpler non-capitalist values, romanticizing the late 1990s in the same way we thought in the 1950s. 19 years may not seem like much in a lifetime, but these Subtle differences are a world apart in some cases. Fortunately, Xu Lun does not spend much time wandering the minefield of outdated technology jokes that this film could have confided.