Ephemera

Ephemera (浮生若梦: a life like a transient dream) is described as a type of expensive stupor-inducing fragrance from the Liao Kingdom that causes the inhaler to feel a type of floaty, immortal-like stimulation. Once the effects pass, the user is left feeling very dispirited and has to inhale the fumes every few days in order to stay inebriated, making it very addictive. Excessive use of the fragrance is shown to cause weakness and laziness.

The fragrance had been banned by the late emperor during his reign.

Later on, it is revealed that Murong Lian had been using it with Zhenxin grass to keep his mind clear after Murong Chen had drugged him with heart control powder.