[關閉] I need help with my website 隐藏链接.

Background of the issue:
I am trying to set REGION / LANGUAGE in the URL for multi-language support on my website using WPML. I want to add sub-languages in the WPML language switcher and have the slug show like 隐藏链接 for Canada in English, 隐藏链接 for USA in English, 隐藏链接 for India in English, and 隐藏链接 for India in Hindi.

Symptoms:
No specific issue or error message mentioned.

Questions:
Could you please provide a solution for setting REGION / LANGUAGE in the URL for multi-language support?
Is there a way to add sub-languages in the WPML language switcher with custom slugs?