Sǐkánǎ is a conlang created by me, a person. It is a tonal language loosely based off of Chinese, and uses the Hanyinwen script (
http://omniglot.com/conscripts/hanyinwen.htm). A mid tone is represented by a vowel sans diacritics; a high tone is represented by a ĉircon, and a low tone a čaron. Rising tones are represented by an ácute, and falling tones by a gràve.