Request in the "preferred languages in webpages"

beterC

beterC

In the Presto versions there were 4 options for Chinese in "prefered languages in webpages"
Chinese (zh)
Simplified Chinese (zh-CN)
Chinese Traditional -Taiwan (zh-TW)
Chinese Traditional - Hong Kong (zh-HK)

But now, the Blink version, there are only 3 options there:
Chinese (zh)
Simplified Chinese (zh-CN)
Traditional Chinese (zh-TW)

If I now browse the site of Chinese Wikipedia(which redirects users to one of the 5 different Chinese versions according to the setting of the browser) , I can't set the browser to browse Hong Kong version automatically, only Taiwan and mainland China's version.

So I want Opera to add zh-HK back, just like Windows is sold in 3 Chinese language versions.
If the "user-defined" option can be added back, it is even better, because there are even zh-mo and zh-sg.

Also, the site of Opera STILL shows the Simplified Chinese version to the browser with zh-HK as preferred, it should show the "Chinese Taiwan" instead.

---------------------------------
Language tree of Chinese
Parent language zh
->Parent variant zh-hant
--->Specific variant: zh-tw
--->Specific variant: zh-hk
--->Specific variant: zh-mo

->Parent variant zh-hans
--->Specific variant: zh-cn
--->Specific variant: zh-sg