Conversation so far:
What were Zheng He's sailing charts ?
Zheng He's Mao Kun map was 40 pages which vary in scale from 7 miles/inch in the Nanjing area to 215 miles/inch in parts of the African coast.
What was the book Wubei Zhi (A Treatise on Armament Technology) about?
The book Wubei Zhi (A Treatise on Armament Technology) included Zheng He's sailing charts, the Mao Kun map, tracing back to Zheng He's and earlier voyages.

Question: Who published the book in 1628 ?
Self-contained rewrite: Who published the book Wubei Zhi in 1628?