5/21~5/31，德奥，这个行程，可行吗？5-21D1Shanghai -> Dusseldorf, 11 departure5-22D2"3，arrive at Dusseldorf -〉Kolnstay at Koln"5-23D3"Koln -〉Frankfurtstay at Frankfurt"5-24D4"Frankfurt -〉Heidelburg stay at Heidelburg"5-25D5"Heidelburg -〉Munichstay at Munich"5-26D6"Munich -〉Fussen -〉Munich...
