https://creativecommons.org/licenses/by/1.0CC BY 1.0 Creative Commons Attribution 1.0 truetrue
The photographs are part of my book. You're welcome to use them on Wikipedia so long as you list my book "Chinese Siege Warfare: Mechanical Artillery & Siege Weapons of Antiquity" by Liang Jieming (ISBN981-05-5380-3) as the source.
Picture of a Well Preserved Spring and Autumn / Warring States Period Repeating Crossbow Excavated from a Chu Tomb ==Source== [http://authors.history-forum.com/liang_jieming/chinesesiegewarfare/ "Chinese Siege Warfare: Mechanical Artillery & Siege Weapo