Gelao people only had a spoken language, not a written one. However, in September 2008, The History of Jiu Tian Da Ling (English: Record of the Nine Heavens) was found in Guizhou. The book is kept by a Gelao person with a surname of Li in Qianbei, whose ancestors were from the Song dynasty. A descendant of King Li Wentong of Gulao, he himself does not know what kind of book this is, but he has always inherited his ancestral teachings and regards this book as a treasure. The discovery of Record of the Nine Heavens fully proved that the Gelao people is an ancient people with a long history and splendid culture. It not only has a written language, but it was also the earliest nation that advocated the concept of "harmony and harmony." The inventors of tea, fireworks, copper, iron, etc., also proved that the Gelao tribe had their own words. However, through identification, the distribution area of the Gelao ethnic group described in Record of the Nine Heavens is consistent with the local declaration after the mid-1980s (for example, it was declared that the birthplace of Gelao was in Wuchuan, while the core area of Yelang was ignored in Panjiang, Chishui, Hebei), deviating from the local history records of the Ming and Qing dynasties. Also, the description of the ancient song "Sue Genyou" in Gelao, and the grammatical errors of the classical Chinese and Gelao in "The History of Nine Heavens" contain many grammatical errors, hinting at the possibility of a modern-day forgery. The Gelao people living in the western part of Guizhou, such as Anshun, used to have Gelao characters made of six Chinese characters, which are used to record some folk songs. Subgroups The Gelao consist of various subgroups. Their historical exonyms, given in a provincial ethnic gazetteer from the Republic of China era, include the following. Flowery Gelao 花仡佬, in Qianwei 前卫, Pingfa 平伐司, Yongning 永宁州, Shibing 施秉, Longquan 龙泉, Huangping 黄平 Red Gelao 红仡佬, in Qingshan 青山司, Anping 安平县, Renhuai 仁怀县, Liping 黎平府 Jiantou/Cut-Head Gelao 剪头仡佬, in Guiding 贵定, Shibing 施秉, Huangping 黄平, Yongning 永宁 Tooth-Hitting Gelao 打牙仡佬, in Pingyue 平越, Qianxi 黔西, Anping 安平, Yongping 永宁, Pingyuan 平远, Huangping 黄平, Qingzhen 清镇 Guoquan/Pot-Circle Gelao 锅圈仡佬, in Pingyuan 平远, Anping 安平, Dading 大定 Datie/Iron-Hit Gelao 打铁仡佬, in Pingyuan 平远州 Pipao/Robe Gelao 披袍仡佬, in Pingyuan 平远, Anping 安平, Dading 大定 Shui/Water Gelao 水仡佬, in