Hi Mr Leostar, tks for your very fast reply! But when I try to book a fligth from shanghai to weifang

there is the following message:(I have tried with booking for another days and there is the same message)

"Thank you for using flight search engine. We are sorry that there may be no flight data responded to one of above requests. Please try to search the flights one by one to get valid information.
Go to China flight search"

Please, can you help me how can I do? tks a lot!!