Abstract: This paper, based on the textual system of topics presented by Wu and Wang (2012),argues that English text writing should be devised globally and locally. Firstly, a global topic must be decided. The topic not only sets the textual theme, purpose and function, and also shapes how the topic is continued hierarchically. Secondly, sentential topic chains and super-sentential topic chains introduced by local topics must be linguistically and culturally appropriate.