Rank progression

1p	1994-04-01
2p	1994-06-30
3p	1995-09-01
4p	1996-08-07
5p	1997-07-23
6p	1999-04-16
7p	2001-04-16
8p	2003-04-01
9p	2003-07-11

Links

Wikidata Q713174

http://www.nihonkiin.or.jp/player/htm/ki000331.htm

SL http://senseis.xmp.net/?ChoU

zh https://zh.wikipedia.org/wiki/張栩

ru https://ru.wikipedia.org/wiki/Тё У

ko https://ko.wikipedia.org/wiki/장쉬

ja https://ja.wikipedia.org/wiki/張栩

fr https://fr.wikipedia.org/wiki/Cho U

es https://es.wikipedia.org/wiki/Cho U

en https://en.wikipedia.org/wiki/Cho U