HTC, Touch Diamond2, how to set the position of your own weather forecast? I come from Xi 'an.

On the main page, slide to the weather tab, click menu-Add Location-Enter Xi 'an-Click Xi 'an-Click Update Now, and you can do it (if you can't update the weather, try several times and it still doesn't work, indicating that the weather source needs to be changed or the computer can be refreshed). If you want to display the weather in Xi 'an on the main page, click on the home clock-add a city-enter Xi 'an-click Xi 'an-select Xi 'an as the local time-and then return. I also use HTC Diamond 2, which is HTC Touch Diamond2. Mine is the American version.