I am in china tianjin. by mistake my passport is washed so what i have to do?

You have to renew it from the Emabssy in Beijing. You eed to provide photocopy of the destroyed passport, a written application stating the circumstances under which the passport was destroyed, four recent passport size colored photographs along with duly filled in application form No: EAP-I and the fee: RMB 1035.00.