yánjiū / QínHàn / lìshǐ / shí / wénzì / cáiliào / hé / kǎogǔ / fāxiàn / tóngyàng / zhòngyào研究秦汉历史时,文字材料和考古发现同样重要。When studying Qin and Han history, written sources and archaeological discoveries are equally important.