1. A method for assisting graphical user interface design, the method comprising: extracting a first interface element from a first graphical user interface (GUI) under a first cultural background; searching in a rule repository for at least one transformation rule corresponding to the first interface element, wherein the at least one transformation rule comprises an action to be taken on the first interface element; based on the at least one transformation rule, transforming the first interface element into a second interface element under a second cultural background; and providing a second GUI comprising at least the second interface element.