Complex sentence: Zhijia (纸甲), which originated during Song-Hsia wars of the Tang dynasty era, is a special type of armour that is made of paper scales which are made of 10-15 layers of mulberry paper and bound together by resin.
Split into simpler sentences: Zhijia (纸甲), which originated during Song-Hsia wars of the Tang dynasty era, is a special type of armour that is made of paper. Each scale is made of 10-15 layers of mulberry paper which are then bound together by resin.