From the Hanyu Pinyin romanization of Mandarin 百色 (Bósè).
Meanings
Synonym of Baise.
Carry her on your back as far as Bose, / Fleeing there will take seven days on the road. 2022, David Holm, Meng Yuanyao, editors, The Brigands' Song: Serving in the Army of A Native Chieftain, Leiden: Brill, →ISBN, page 101: