Wan is a kind of grass, which is the common water onion. The original meaning of Dongguan is "the place where there is Wan grass in the east". Of course, some people say that the "Wan" in Dongguan, Guangdong refers to Wanxiang wood. In short, it is A plant. The ancients' names were very simple and often included natural scenery, such as Baqiu and Dongpu. The more famous ones are Shangqiu, Tianjin, Linyi, and Bengbu. Later, people's naming was no longer so direct, and many deep and beautiful meanings were added, such as Xi'an, Nanning, Beiping, Dongchang, etc.
In fact, Guangdong not only has Dongguan, there used to be a Xiguan.