The Kaiyuan bow is part of the Dashao or Large-Ear bow (大稍弓) genre of Ming Dynasty (1368--1644 AD) bow design. Its defining characteristics are its deep brace height, sharply double-bent ears, and flared string notch. This is a smooth and stable design that enjoys hurling medium-heavy arrows (in the 11--12 grains-per-pound range).

Your bow is pre-quality checked in South Africa by Lost Arts Archery, before it is shipped to your door. 

How to roughly estimate your Ming military style draw length: 1/2 arm span minus 2 to 3"

*Please unstring the bow if not in use, or it may loose draw weight.