怎么样买得到这种票呢？

http://www.trenitalia.com/en/promozioni_offerte/promozioni/smart_price.html#ROMA,%20FIRENZE,%20BOLOGNA,%20VENEZIA,%20MILANO%20-%20PARIGI



ROME, FLORENCE, BOLOGNA, VENEZIA, MILAN - PARIS


On the night trains leaving from Rome, Florence, Bologna, Venice and Milan:


Price(in euro) Solution

35 couchette in 6-place compartment

60 60 couchette in 4-place compartment.


这是说35欧就可以从罗马-佛罗伦萨-博洛尼亚-威尼斯-米兰哦！划算！

但是我怎么也找不到具体的行程是怎么样哦...也找不到购票的链接

有大侠看得懂不？谢谢！