How to insert weather forecast into your website

We hope to insert the weather forecast into the website: the following effect:

Need to insert the following code:

<iframe src="http://www.weather.com.cn/weather/101190801.shtml" width="245" height="110" marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"></iframe>

That link is to the "China Weather" website.

When you need the weather of other cities, replace the string 101190801. So how do I know what string is what city?

For example, when we search for Shanghai, we see the URL is: http://www.weather.com.cn/weather/101020100.shtml

Then you understand! Just replace the original string with the number string after the city you need!