http://book.klll.cc/ebooks/author/32384.opds?sort_order=downloads 2025-11-17T07:04:29Z Books by Liu, Hui, active 3rd century-4th century Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-17T07:04:29Z https://en.wikipedia.org/wiki/Liu_Hui See also: en.wikipedia 2025-11-17T07:04:29Z https://book.klll.cc/ebooks/26979.opds 海島算經 (Chinese) active 3rd century-4th century Hui Liu