Supposititious Activities in Central Plains Area in the Period of Sui-Tang and Five Dynasties——Centered Around Heluo Area;

The Social Development of Heluo Area in the Periods of Emperor Yan and Emperor Huang;

As a result of hard workiong of laboring people , abundant natural resources and managing measures, laws and regulations by government, rapid development of fish industry in He Luo area during Han and Tang dynasties is made.

Historical records say Gong Gong clan s was long there in He Luo area and between west Yu area and south Jin area was the central territory of Gong Gong clan.

Heluo region and Haidai region are adjoining to each other.

Based on the ancient geography enviroment and the properties of tertiary rock in Luoyang region,the paper classified the tertiary rock into different types,tested the physical and mechical properties through in-situ and Laboratory experiments,put forward the allowable bearing capacity of tertiary rock,which is a very important parameter in Engineering.

The mural tombs of the Han Dynasty found in Luoyang region can be called the representatives of murals of the Han Dynasty for its great quantities, concentrated distribution, temporal continuity, and its subject matter, technique, layout and other vision effects which all together have aroused the attention of scholars both at home and abroad.