Two years ago my friend Lisa bought expensive mountain bike, that I liked very much. So she tried to persuade me to buy one, but I can't afford it. From then on,I had been dreaming about buy one. A week ago, my dream finally was came true. Then Lisa and I were determined to take a great bike trip.It was the Mekong River where we wanted to cycle along. Lisa was stubborn. Although he didn't know the best way getting to places ,she insisted that we began our journey from the source of the River.I know Lisa well. Once she has made up her mind, something can change it.Finally, I had to give in.