This talk is based on my survey on the Fukaya categories on singular hypersurfaces. Auroux proposed a definition of the Fukaya category of a singular hypersurface as the localization of that of a nearby fiber at the clockwise monodromy autoequivalence. Jeffs showed that it is equivalent to the Fukaya-Seidel category of the associated Liouville Landau-Ginzburg model (Knorrer periodicity). In this talk, I will outline his proof and present some of my observations. On the way, I will explain background materials, ignoring additional data on Lagrangians such as grading and orientation.