Author’s reconstruction of Zheng Xuan’s Big Shoot target dimensions and heights as detailed in Kong Yingda and Jia Gongyan’s subcommentaries (1 chi = 10 cun). Note that the World Archery Federation regulation 70 m (≈ 50 racoon-dog pace) butt is provided in the lower left corner for the sake of comparison (scaled at 1 chi = 23.1 cm) and that the heights of individual components are provided on the right for the sake of visualising Kong Yingda and Jia Gongyan’s respective proofs. Note that the dimensions of the ‘stalks’ include those of the protruding ‘tongues’.