假定你是李华，你的美国朋友Peter想来中国旅行，他写信向你了解他到北京后乘坐何种交通工具旅行比较适宜。请你给他写封回信，建议他乘坐高铁。
建议理由：
1）便捷、准点；
2)舒适、安全；
3)购票方便、价格适宜。
注意：1)词数100左右；
2)可以适当增加细节，以使行文连贯；
3)开头已为你写好，不计入词数。
参考词汇：中国高铁CRH (China Railway High-speed)
自助售票机self-service ticket machine
Dear Peter,
I'm expecting you to come to China. ……
Yours,
Li Hua
Dear Peter,
I'm expecting you to come to China. When you arrive in Beijing, you'd better take the CRH train, which has been well developed and become popular in China nowadays.
It has lots of different lines, so it is convenient for you t
