"Guilin has been a metropolis since the Tang dynasty and has the best preserved Ming dynasty houses," said Yang Yongde, founder of the Tourism Research Institute at Guangxi University.

“桂林自唐代以来就一直是大都市，它有保存最完好的明代建筑，”广西大学旅游科学研究所(现为广西西大旅游科学研究院——译注)创建人杨永德说道。

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Zhu Yang-ming. Geochemistry of Mesozoic Terrestrial Source Rock and Oil in the Tarim Basin[M]. Chongqing:Chongqing University Press, 1997:123-125(in Chinese).

[14]朱扬明。塔里木盆地中生界陆相生油层及原油地球化学[M]。重庆：重庆大学出版社，1997：123-125。

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