In fact, there is only one train to Xiaobeihu, Jining, and we have to change trains several times. Take bus No.7 from Shigao to the railway station, then transfer to bus No.6 to Jining Driving School, transfer from Jining to bus 12, and transfer to bus No.21from South Bus Station. Yanzhou takes the No.7 bus to 2 yuan, No.6 bus to 2 yuan, Jining takes the 12 bus to 0 yuan, and 12 bus to 0 yuan. What can you ask me for the first time?