While traditional "hard" materials,crystals,remains to be important in developing robust devices and technologies in modem electronic and IT industries,soft materials are replacing a large number of traditional "hard materials" as they often display multi-functionality,smartness/responsiveness and ultra-performance.The two classes of seemingly unrelated materials are found to be correlated in many cases in terms of crystal networks.High preferment soft functional materials consisting of interconnecting network become increasingly important in both sciences and technologies.It has been shown that in many cases,the hierarchical networks structures give rise to much more superior properties than singles crystals themselves.For instance,the special crystal network structure of amino acids in spider silk leads to the tensile strength several magnitude higher than single chains of amino acids.Due to these facts,our interests are shifted from the control of single crystals,such as size and shaPe of single crystals to the engineering the crystal network.In this contribution,new understandings on the formation kinetics of crystal network,and the between the network structure and the properties of the systems will be presented.I will introduce the latest development in the kinetics of fiber network formation,the correlation between the structures of biological functional materials and the in use properties,and the application to megascopic engineering.This includes the engineering of nano phase and ultra-functional soft-materials.