411 REFERENCE · Wikibooks
Pinyin/Wheel
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Pinyin#Pinyin tone marking
A wheel is a round object that turns around and around to make vehicles move.
lurn'zi shih yuarnxirng d wuhtii, xuarnzhuaan shir jiaotong gongjuh yirdohng.