Hi .. Have you tried tracking here..
http://english.chinapost.com.cn/
Not reliable and items from China can take a month and on occasion, longer.
At 30 days , contact seller.
Here is PayPal buyer protection..
http://pages.ebay.ca/help/buy/paypal-buyer-protection.html
No matter what seller may say always open a dispute/claim, in the resolution center of your PP account, no later than day 43 from date payment was sent.