Download is after opening English  I need is Chinese what I should do

You can download the trial version of the software thru the page linked below and then use your current serial number to activate it.

Be sure to follow the steps outlined in the Note: Very Important Instructions section on the download pages at this site and have cookies enabled in your browser or else the download will not work properly.  http://prodesigntools.com/tag/ddl

Non-cloud: You can swap languages/platforms for a latest version product if you follow the instructions at the following link:

http://helpx.adobe.com/x-productkb/policy-pricing/order-product-platform-language-swap.html

Creative Cloud Help / Adjust the install language | Creative Cloud applications | CCM -

http://helpx.adobe.com/creative-cloud/kb/change-installed-language.html