Talk:Chaoshan

Wiki Education Foundation-supported course assignment
This article was the subject of a Wiki Education Foundation-supported course assignment, between 4 October 2021 and 9 December 2021. Further details are available on the course page. Student editor(s): Damonmand.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 17:11, 16 January 2022 (UTC)

is considered as one of the oldest Chinese dialects for it preserves many elegant and refined features from ancient Chinese that have been lost in some of the other modern dialects of Chinese.
This statement needs substantiation. What are the sources of such claims? What are the 'elegant' and 'refined' features from 'ancient' Chinese? Chinese from which period? Are there examples of such 'features'?