In the 1990s, the seals of "Tian Zhou Tu Zhifu Yin" (Tianzhou prefect s seal) and "Zhen an Fu Tu Zhifu Yin" (Zhen an Fu prefect s seal) were found in Guangxi.

The Eco-city Planning of old Districts in Lanzhou;

Seasonal variation characteristics of element concentration of street dust in Lanzhou;

Investigation of Household Drinking Water in Lanzhou City;

Investigation on the seed plant flora of the wetland along the Yellow River in Lanzhou City;

Research on current condition and developing countermeasure of community sports in Lanzhou City;

Study on the Timing of Lanzhou City Leapfrog Development from the Space Perspective;