Jump up ^ It is not known which year Yang Wan became deputy minister of civil service affairs .
It was after 764 , and deputy minister was moved to another position in 770 , and therefore this must have happened during those years .
Jump up ^ It is not known which year Yang Wan became deputy minister of civil service affairs , but it was after 764 , and he was moved to another position in 770 , and therefore this must have happened during those years .