Rastas use their physical appearance as a means of visually demarcating themselves from non-Rastas. There are also many regional and local rites demarcating times of the year. In 1874, a canal called Chang-Tong gang demarcating then Changshu and Nantong was built. Demarcating boundaries between disciplines can be difficult. The funeral ale was a way of socially demarcating the case of death.