Quirin Press has recently published Richard W. Bodman, Poetics and Prosody in Early Mediaeval China: A Study and Translation of Kūkai’s 空海 ‘Bunkyō Hifuron’ 文鏡秘府論. Compiled in 819, Kūkai’s work is a collection of Chinese writings on poetics and prosoday, most of which were lost in China after the Tang.
https://www.quirinpress.com/ISBN/9781922169365.html.
Last year Quirin Press published a fully revised edition of John Timothy Wixted’s Poems on Poetry: Literary Criticism by Yuan Haowen 元好問 (1190-1257). The work contains extended treatment of poems on several Tang authors’ poetry: Chen Zi’ang, Shen Quanqi, Song Zhiwen, Li Bai, Du Fu, Yuan Zhen, Yuan Jie, Bai Juyi, Li He, Liu Zongyuan, Meng Jiao, Han Yu, Lu Tong, Li Shangyin, Lu Guimeng.
http://quirinpress.com/ISBN/9781922169341.html
Quirin Press is currently offering a 5% discount and free shipping (to US, UK, Australia) for direct orders of 2 books. Other volumes are available in reprint editions (with pinyin romanization and re-typeset texts) by Stephen Owen, A.C. Graham, and Henri Maspero.