Wordpress site within a wordpress site, .htaccess? - wordpress

Question

I was asked to move one working WP site (site 2) onto a folder of another WP site (site 1)(because the first site is being blocked in China and the second isn't).
so the complete URL ended up being www.site1.com/site2
I managed to do so but the links on the second site are no longer working, they show a 404 from site 1 but the URL seems OK
www.site1.com/site2/path_to_page_on_site_2 -> 404
I assume it is because of the .htaccess from site 1:
# Redirect images
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule ^font/(.*)$ /wp-content/themes/site1/font/$1 [L]
RewriteRule ^timages/(.*)$ /wp-content/themes/site1/image/$1 [L]
RewriteRule ^images/(.*)$ /wp-content/uploads/images/$1 [L]
RewriteRule ^videos/(.*)$ /wp-content/themes/site1/video/$1 [L]
</IfModule>
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
Site 2 has a "standard" .htaccess from WP
# 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
if it is an htaccess problem, how can i stop the htaccess from site 1 affecting site 2?
if it is something else, how can i fix it?
thanks in advance

Answer 1

I managed to do what i was after thanks to Nikola's comment. This is the final htaccess file for site2
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /site2
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /site2/index.php [L]
</IfModule>
# END WordPress
I wanted to redirect all the calls to site2 to the appropriate folder so relative paths were not affected but was not able to do it with htaccess, so i had to do a replace in the database to make them absolute.