Focusing on the principle of the Qieyun Diagram in the period of Tang Song and Yuan dynasties and the principle of the minimal pair in west phonology, bringing to light some wonderful talk by Lu Zong-mai lived in 12 century, the author points out that the Qieyun Diagrams (and the syllable chart in later days) are based on the features of Chi.

Petroleum geologic property and reservoir-forming pattern of Melut Basin in Sudan;

A Study of the Buddhist Architectural Culture in Chiang Mai and Chiang Lai of Thailand;