解铃还须系铃人

1. • lit. whoever hung the bell on the tiger's neck must untie it (idiom)
2. • fig. whoever started the trouble should end it

Character by character

• 解(jiě)divide
• 铃(líng)bell
• 还(hái)still
• 须(xū)must
• 系(xì)connect
• 铃(líng)bell
• 人(rén)person