china_addons/oec_im_wecom_base/views/assets_templates.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo>

    <template id="assets_backend" name="wxwork settings assets" inherit_id="web.assets_backend">
        <xpath expr="." position="inside">
            <link rel="stylesheet" type="text/scss" href="/oec_im_wecom_base/static/src/scss/wecom_settings_navigation.scss"/>
        </xpath>
        <xpath expr="//script[last()]" position="after">
            <script type="text/javascript" src="/oec_im_wecom_base/static/src/js/wecom_settings_navigation.js"></script>
        </xpath>
    </template>

</odoo>