大本营

headquarters / base camp

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

root / stem / origin / source / this / the current / original / inherent / originally / classifier for books, periodicals, files etc

camp / barracks / battalion / to build / to operate / to manage / to strive for

Happy Camp (PRC TV series)