Yangqiao (Yang Heel) channel, C17/18 Chinese book art
Licence: Public Domain Mark
Credit: Yangqiao (Yang Heel) channel, C17/18 Chinese book art. Wellcome Collection. Source: Wellcome Collection.
Licence: Public Domain Mark
Credit: Yangqiao (Yang Heel) channel, C17/18 Chinese book art. Wellcome Collection. Source: Wellcome Collection.