The site co-ordinator / space administrator is Chris Dillon.
He also provides grammatical explanations. Email him if you would like to get involved with the site.

Jin Gao worked on learning Chinese characters.

Selina Zhang provided character-explanations, examples and translations.

Binqian Cai contributed more characters and examples (especially measure words) and also conversations.

Reiko Nakazawa painted the pictures (including the ones on this page!).

Ting Zhang contributed lots of sentences and conversations.