This classification is too restrictive, and too South-centered. But if is worth knowing.
The most important publisher, AKA "CRC Jianian". TODO meaning of Jianian?
Chinese government owned unfortunately.
Their website takes forever to load: www.china-crc.com.cn/, and features mostly Communist shit, and I can't find the decent traditional music listed there.
One thing to try is an Amazon advanced search by label "China Record Co": www.amazon.com/s?i=digital-music&rh=p_33%3AChina+Record+Co&s=relevancerank&Adv-Srch-MP3-Submit.x=42&Adv-Srch-MP3-Submit.y=4&unfiltered=1&ref=sr_adv_m_digital
Bibliography:
There are unlisted articles, also show them or only show them.