@marienka ok, Hope to get a solution as soon as possible. Now, I use windy.com as the most powerful tool here.

@nicolas-a Thanks for yr kind reply,,,but I think, wifi quality is very ok,,, and I can visit facebook website, based on VPN service.

offline error....I'm a new user fm China

forecast function can not be launched,,,, "offline error" just appear on the top...(refer to the attached jpg) Can someone help???