jié àn
to conclude a case
to wind up
Dí gōng àn
Dee Gong An or Judge Dee's cases, 18th century fantasy featuring Tang dynasty politician Di Renjie 狄仁傑|狄仁杰[Dí Rén jié] as master sleuth, translated by R.H. van Gulik as Three murder cases solved by Judge Dee (lit. the Di Renji case)
jiē àn
to be informed of a case
to take a case
to contract for a job (as a freelancer)