After Zheng Chenggong died, in 1685 his grandson Zheng Keshuang submitted a letter of surrender to the Qing Dynasty. After the news spread around, all the soldiers and officers were so agitated that they wept bitterly and their tears turned to blood. Ultimately, they were transformed into pitta birds and flew away.
鄭成功死後，永曆卅八年，其孫鄭克塽上書降清，消息傳來，眾軍將士悲憤泣血，最後化為八色鳥悲啼而去。