Original: Under Qing pressure , Zheng Jing struggled to defend Xiamen , Quemoy and the Pescadores islands , which he had eventually lost over the years , mainly due to his minuscule forces which were insufficient to defend from the Qing .
Simplified: Zheng Jing fought the Qing to defend Xiamen , Quemoy and the Pescadores islands , which he finally lost over the years .