操练

drill / practice

old variant of 操[cao1]

to grasp / to hold / to operate / to manage / to control / to steer / to exercise / to drill (practice) / to play / to speak (a language)

variant of 肏[cao4]

to practice / to train / to drill / to perfect (one's skill) / exercise / (literary) white silk / to boil and scour raw silk