 This extravagant display has been analyzed as showing an "erotically charged ... reciprocity [in] this symbolic gesture of swapping images of wives.Because of the brevity of the Treaty of Nanking and its terms being phrased only as general stipulations, the British and Chinese representatives agreed that a supplementary treaty should be concluded to establish more detailed regulations for relations.On 3October 1843, the parties concluded the supplementary Treaty of the Bogue at the Bocca Tigris outside Canton.