My clients have a website, which is similar to alibaba (just a question) Example: https://wholesaler.alibaba.com/w/ch-a.html if they want to boost up the 1+ millions product pages (Example: https://wholesaler.alibaba.com/w/wholesale-a0.html) Where should we build links to? as we can't build links to all 1+ millions product pages (too much..) should we build links to https://wholesaler.alibaba.com/w/ ? or should we build links to https://wholesaler.alibaba.com/w/ch-a.html ? or should we make random internal links in products pages and build specific product pages? or any suggestion?