Image: Five whirlwind trebuchets wjzy
Five_whirlwind_trebuchets_wjzy.jpg (300 × 384 pixels, file size: 40 KB, MIME type: image/jpeg)
Description: Wujing Zongyao illustration
Title: Five whirlwind trebuchets wjzy
Credit: Own work
Author: Yprpyqp
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes
Image usage
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