" content="{{ page.lang }}" />
    <meta property="og:locale:alternate" content="{%- if page.lang == "en" -%}zh{%- else -%}en{%- endif -%}" />
    {%- if page.image %}
    <meta property="og:image" content="{{ seo_img_url }}" />    
    {%- endif %}
    <meta property="og:description" content="{{ page.description | default: desc_from_content }}" />
    <meta property="og:url" content="{{ site.url }}{{ page.url }}" />
    <meta property="og:site_name" content="{{ site.name[page.lang] }}" />
    <meta propert