blog/themes/material-flow/layout/_partial/footer.ejs

<footer id="footer" class="clearfix">

    <div class="social-wrapper">
        <% if (theme.social) { %>
            <% theme.social.forEach(function(value, key) {
            if (value.url && value.slug) { %>
                <a href="<%= value.url %>" class="social <%= value.slug %>"
                   target="_blank" rel="external">
                    <span class="icon icon-<%= value.slug %>"></span>
                </a>
            <% } }); %>
        <% } %>
    </div>

<!--    <div>Theme <a href='https://github.com/stkevintan/hexo-theme-material-flow' class="codename">MaterialFlow</a>
        designed by <a href="http://keyin.me/" target="_blank">Kevin Tan</a>.
    </div>-->
    <div> ©2019 <a href="/about">Killua</a> <a href="http://www.miitbeian.gov.cn/">蜀ICP备19021585号-1</a></div>

</footer>