Wordpress .htaccess用于复杂的需求

I have wordpress installed in my root directory...

I have two sub folders called test1 and marketing in root folder.

Now when i try to open pdf files inside my marketing folder, my wordpress site redirects me to 404 error .

for example, i am trying to open following link

http://example.com/marketing/test.pdf it redirects me to http://example.com/404

Now for scenario two , I have installed wordpress in test1 too.

But for some links of test1 wordpress , it also redirects me to 404 page.

for example, i am trying to open following link

http://example.com/test1/portfolio/interior-site it redirects me to http://example.com/404

My root directory's .htaccess is as below

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

My test1 folder's .htaccess is below

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /test1/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /test1/index.php [L]
</IfModule>

# END WordPress