411 REFERENCE · Wikibooks
Pinyin/Occur
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
See also
Pinyin#Pinyin tone marking
to occur: something to happen
chuxiahn: mooushihwuh fasheng
411 REFERENCE · Wikibooks
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.