《资治通鉴·唐纪·唐纪四十三》
你如果能够带头将易州归属朝廷，那么，打败李惟岳的功劳便是由你开头的，这正是你转祸为福的良策啊。 
使君诚能首举易州以归朝廷，则破惟岳之功自使君始，此转祸为福之策也。 
If you can lead the surrender of Yizhou to the court, then the credit for defeating Li Weiyue will be yours. This is the best way to turn disaster into fortune.