Lan Chun. 2002. A cognitive approach to Up/Down metaphors in English and Shang/Xia metaphors in Chinese. In Altenberg, B., and Granger S. (Ed). Lexis in Contrast. Corpus-based approaches. Philadelphia, PA, USA: John Benjamins Publishing Company, 2002. pp161-184.
http://www.corpus4u.org/upload/forum/2005112517194095.pdf
http://www.corpus4u.org/upload/forum/2005112517194095.pdf