Ways in Guangdong, China without name:zh

I want to get a list of Chinese names of ways in Guangdong.

1. Using Overpass API, I have found ways that have name and do not have name:zh. Is this standard for OSM data?
2. I have also found ways that have name in Traditional Chinese (rather than Simplified Chinese, as observed for name:zh elsewhere), a name:yue in ad-hoc/non-standard Cantonese romanization (improper according to the OSM wiki), and do not have name:zh. Is this standard for OSM data?`

If so,

1. What is the recommended way for getting Chinese names?

If not,

1. What is to be done to add name:zh?
2. What is to be done with the improper name:yue? What can I do, or which community members can I contact?

Overpass API query for 2.:

[out:csv(::id, "name", "name:yue", "name:en"; true; "       ")][timeout:25];
relation(911844);map_to_area->.mySearchArea;
(
  way
  ["name:yue"]
  [!"name:zh"]
  (area.mySearchArea)
  ;
)->.myWays;
.myWays out tags;