As an ordinarily legal frame in orient and occident,concealment systems originally respond concealment actions in our daily lives.

In the legal frame of orient and occident,there are particular rules on concealment system.

This dissertation has reviewed the development of mutual-concealing among the relatives in the different dynasties of Chinese feudal legislation, and sum up its characteristics: the relative s right of hiding up have been extended; the legal obligation have changed into legal right and so on.

"Legal Protection Between Relatives" is actually getting activated and the system of refusing to testify against family members is expected to be established in China.

This article focuses on the analysis of the modern value of the lawsuit cultural heritage about non-litigation,accusing evils,tolerating concealing,overstepping indictment,etc.

To present an summary and overview of recent developments on binary image information hiding, and discuss some important issues of those techniques such as robustness and data hiding capacity.

Then the author give a proof of the hiding capacity under the condition of no attack,and discuss the characteristic of the model.

2D-shuffling of image DCT coefficients is introduced in the information hiding arithmetic in order to equalize the uneven distribution of hiding capacity and to mprove the arithmetic validity.

Modern rights of toleration and concealment of relatives should be constructed in criminal rules.