Chinese 宣泄 xuānxièLit. 'to let accumulated water flow'.

Can also mean to divulge or leak a secret. 宣 (xuān) means to unblock something/get things flowing, 泄 (xiè) to leak water/gas, to drain. Together, they mean letting loose something that's been bottled up. It's similar to vent in an emotional sense but has a much broader meaning.