 Transition metal carbides or nitrites, emzines, have been discovered in 2011 and have attracted attention due to their unique properties. However, their low accessible surface area and poor processability caused by restacking has hindered their practical use. Recent progress in constructing emzine assemblies from 2D to 3D at the macro and or micro level is summarized along with the mechanisms of assembly. The possible uses of emzine assemblies in energy conversion and storage, electromagnetic interference, shielding and absorption, and other applications are also discussed. This article is authored by Zhitom Wu, Tong Xingxiang, Yi Qianding, and others.