They are "the Western Hotels" "the New Stylistic Hotels" and "the Old Stylistic Inns" How to protect and reuse these the Mordern Architcctursc arc very realistic problem for building Beijing s Historical looks.

Exploration in branch vein of No.1 ore vein and genesis analysis on the deposits in the Jiudian gold ore area;

Investigation on the Hygienic State of 736 Hotels with the Hygienic Quantified and Classified Method in Haidian District, Beijing;

The Course and the Rules in the Development of Hotel in China from the First to the Sixth Century;

Technology research on underground ventilation cooling in Jiudian gold mine

Based on the actuality of underground mining system in Jiudian gold mine,the mined-out areas were used as assistant air exit and it achieved good result.