"Liu-tu Chi Ching was printed in the eighth year of Yuan-feng (1078-1086) in the Northern Sung Dynasty and is the oldest precious book in Harvard-Yenching's collection," points out Shen Chin.
「『六度集經』印於北宋元豐八年，距今已有九百零七年，是目前燕京藏書中最古老的善本」，沈津指出。