Xu Ying (librettist) explained

Xu Ying (徐瑛, born 1962) is a Chinese librettist.^{[1] [2]}

His traditional Beijing opera librettos include Hunchback Prime Minister Liu (2002), Sun Wu the Strategist (2002), Cai Wenji (2003). He wrote the libretto for Bun Ching Lam's chamber opera Wenji (2001), co-wrote with composer Tan Dun the libretto of Tea (opera) (2002), and was co-librettist of the opera Poet Li Bai (2007) for composer Guo Wenjing.^[3]

Notes and References

1. Encyclopedia of Contemporary Chinese Culture - Page 954 Edward Davis - 2005 "Xu Ying b. 1962, Hunan Theatre librettist Xu Ying is a prolific librettist, actor and director, whose work ranges from adaptations of classics to avant garde productions..."
2. http://www.poetlibai.org/Poet_Li_Bai/Bio_Xu_Ying.html Bio Xu Ying
3. Opera Volume 59 Page 38 2008 "China Shanghai - Guo Wenjing is the leading Chinese opera composer of his generation still based in his native country, and perhaps anywhere in the world. His new chamber opera. Poet Li Bai, is set to a unique libretto, though its treatment is.. The librettists Diana Liao and Xu Ying include subtle, but only fragmentary allusions to Li Bai's most famous poems, which ... in a manner at once more rigorous and more nuanced than his more celebrated 1978 Beijing classmate, Tan Dun."