Navigate to your Newchic affiliate profile. On that page, you can find your Affiliate Code
All you need is to copy that Affiliate ID, open extension options, go to Platforms / Chinese / other stores, and paste Affiliate ID in the DX (dealextreme) field.
Then close options, find the product on Newchic you want to share and click on the extension icon. It will generate an affiliate link for that page. Then you can use bit.ly to shorten that link (if configured) or copy and share it.