zhè xiē / nián dài / jiǔ yuǎn / de / zhàng cè / jì lù / le / shāng hào / dāng nián / de / jīng yíng / qíng kuàng这些年代久远的帐册,记录了商号当年的经营情况。These age-old account books record the business operations of the firm during those years.