install network (using sub-dir) on a subdomain wordpress

The title may be confusing, here explains:

The normal version of WordPress is https://blog.highradio.tw/ , using rewrite rules from https://www.highradio.tw/wordpress/.
The url of multi-site version I want is https://blog.highradio.tw/user .

It works just fine using normal version of wordpress.
After I open the multisite function and re-login, it continues redirect to “https://blog.highradio.tw/wp-login.php?redirect_to=https://blog.highradio.tw/wp-admin/&reauth=1”.
That is, I cannot access the wp-admin panel.

The root htaccess:

Options +FollowSymLinks
RewriteEngine	On

RewriteCond %{HTTP_HOST} ^blog\.highradio\.tw
RewriteRule ^(.*)$ wordpress/$1 [L]

.htaccess in /wordpress/:

RewriteEngine On
# BEGIN WordPress

RewriteBase /wordpress/
RewriteRule ^index\.php$ - [L]

# uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule  ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule  ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

# END WordPress

added in wp-config.php:

define('WP_ALLOW_MULTISITE', true);
define( 'MULTISITE', true );
define( 'SUBDOMAIN_INSTALL', false );
$base = '/wordpress/';
define( 'DOMAIN_CURRENT_SITE', 'blog.highradio.tw' );
define( 'PATH_CURRENT_SITE', '/wordpress/' );
define( 'SITE_ID_CURRENT_SITE', 1 );
define( 'BLOG_ID_CURRENT_SITE', 1 );