Brave Girls Yu-Jeong 'hidden in the beanie'

Brave Girls members Min Young, Yu-Jeong, Eunji and Yuna arrive on July 9 after finishing their schedule in Jeju Island through domestic flights at Gimpo International Airport in Banghwa-dong, Gangseo-gu, Seoul.

About Yu-Jeong

An oil well is a boring in the Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually some natural gas is released as associated petroleum gas along with the oil.  Wikipedia