The she was an implement for archers on horseback, used to protect the thumb when drawing the bow and pulling the bowstring. The earliest she discovered by archaeologists is the one from the tomb of Fuhao in the Waste of Yin at Anyang, cylindrical in shape with a hole in the centre, used as a cover for the thumb. By the Eastern Zhou this developed into a she used for the forefinger, the shape more solidly three-dimensional and the hole in which the finger is inserted slanted tongue-like to contain the hooked finger, with at one side a trigger on which to hook the string; see Xu Rucong, ‘Chushe [Archer’s Rings of Chu]’, Jianghan kaogu [Jianghan Archaeology] 5 (2014), pp. 46-62. Beginning with the Western Han, jade archer rings gradually developed into archer ring-shaped pendants, shapes thin and flat, centre holes deformed and reduced in size, and peripheries engraved with much decoration - gradually changing from something of practical use to ornamental objects hung at the waist.
Compare a similar jade archer ring unearthed from the tomb of the Warring States Marquis Yi of Zeng in Sui County, Hubei, illustrated in Gu Fang, Zhongguo chutu yuqi quanji [The Complete Collection of Jades Unearthed in China], vol. 10, Beijing, 2005, p. 98. However, the trigger hook part of this jade archer ring seems more ornamental, and the whole shape tends to be thinner and flatter, which would indicate a later dating.