weatherdocklet not work .....

for "nantong,china",it 's work ,but for "nanjing,china",do not work,   the packets like this,anyone could help me?thanks a lot

POST /weather.asmx/GetForecastWeather_ HTTP/1.1
Accept: */*
Accept-Language: zh-cn,zh-TW;q=0.7,en-US;q=0.3
Content-Type: application/x-www-form-urlencoded
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Avant Browser; Hydra Browser; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; CIBA)
Host: weather1.sdcentral.net
Content-Length: 24
Connection: Keep-Alive
Cache-Control: no-cache

SearchText=nantong,china
HTTP/1.1 200 OK
Connection: close
Date: Sun, 01 Jun 2008 12:33:28 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private, max-age=0
Content-Type: text/xml; charset=utf-8
Content-Length: 972

<?xml version="1.0" encoding="utf-8"?>
<weather>
<copyright>Copyright AccuWeather, Inc. 2008</copyright>
<timestamp zone="GMT">05/31/2008 04:24</timestamp>
<forecast>
<citycode>ZB19</citycode>
<day>
<name>Saturday</name>
<icon>18</icon>
<high unit="F">84</high>
<low unit="F">62</low>
</day>
<day>
<name>Sunday</name>
<icon>18</icon>
<high unit="F">72</high>
<low unit="F">59</low>
</day>
<day>
<name>Monday</name>
<icon>12</icon>
<high unit="F">81</high>
<low unit="F">70</low>
</day>
<day>
<name>Tuesday</name>
<icon>04</icon>
<high unit="F">88</high>
<low unit="F">71</low>
</day>
<day>
<name>Wednesday</name>
<icon>03</icon>
<high unit="F">90</high>
<low unit="F">72</low>
</day>
<locale>2</locale>
<area>Nantong, CHINA</area>
</forecast>
</weather>

and

POST /weather.asmx/GetForecastWeather_ HTTP/1.1
Accept: */*
Accept-Language: zh-cn,zh-TW;q=0.7,en-US;q=0.3
Content-Type: application/x-www-form-urlencoded
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Avant Browser; Hydra Browser; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; CIBA)
Host: weather1.sdcentral.net
Content-Length: 24
Connection: Keep-Alive
Cache-Control: no-cache

SearchText=chengdu,china
HTTP/1.1 200 OK
Connection: close
Date: Sun, 01 Jun 2008 12:37:06 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private, max-age=0
Content-Type: text/xml; charset=utf-8
Content-Length: 51

<?xml version="1.0" encoding="utf-8"?>
<weather />