f(x) Born Sulli, a picture of yesterday. In a tired expression, rumors are "one wave wave", Korean "leaflets" are incompatibility theories and self-destruction theory.

※ Flyer: Korean slang meaning "cheaply rude information source with uncertainty at the level of rumors" or its information. Originated from "Japanese leaflet advertisement".

In particular, it is said that the rapid rumors in securities streets have an influence on stock price fluctuations, so that they originated from the "Flyer Information Magazine" in the securities district.

Now, with the development of IT technology, information magazines which "flyer printed" are lost, SNS is used instead of flyer printed matter.