The key to Transfer Paypal to WeChat Wallet is that you have to verify your WeChat account via a Credit card or Passport ID. Now WeChat Accept Foreigners to verify their WeChat Account. You can see Me->Wallet -> Add a Card to finish this process. Also, you can ask a WeChat Friend to send you a small amount like ¥0.01 to you and it will guide you how to Finish Verifying.
In fact, PayPal is not allowed to transfer Directly to WeChat Wallet due to Different Company and Different Countries. So it is no way to Transfer Directly to WeChat wallet From PayPal. Then The only way to transfer Paypal to WeChat wallet is find a reliable Agent Like YAYAKA.
There are more and more people use Wechat pay to buy products in China even outside China. It becomes more and more convenience to Pay when we are outside. Even you want to buy something in a village far away from Beijing or big city, Wechat is also the best choice. it is a Cashless society now. I hope my answer will help you.