文件:Qinacruballistabolts.jpg

Picture of Qin Dynasty Arcuballista Bolts shown with Regular Handheld Crossbow Bolts, 5th- 3rd century B.C.

Source

"Chinese Siege Warfare: Mechanical Artillery & Siege Weapons of Antiquity" by Liang Jieming, ISBN 981-05-5380-3

http://authors.history-forum.com/liang_jieming/chinesesiegewarfare/images/qinacruballistabolts.jpg

Licensed

本文件采用知识共享署名 1.0 通用（CC BY 1.0）许可协议授权。

您可以自由地：

• 共享 – 在任何介质以任何形式复制、发行本作品
• 演绎 – 演绎、转换或以本作品为基础进行创作

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• 署名 – 您必须给出适当的署名，提供指向本许可协议的链接，同时标明是否（对原始作品）作了演绎。您可以用任何合理的方式来署名，但是不得以任何方式暗示许可人为您或您的使用背书。
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许可证条款文本

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 (ISBN 981-05-5380-3) as the source.

I hope that helps.

Cheers, Leong Kit Meng (Liang Jieming) <liang_jieming@history-forum.com>