is this seat taken ?   no . please sit down .   thanks .   are you also going to Beijing ?   yes , on a business trip . How about you ?   I'm taking a vacation to visit a friend there . Have you ever been there before ?   yes , I went there once last summer .   really ? What did you think ?   I think it is amazing . You can enjoy both the traditional Chinese culture as well as the vitality of a modern cosmopolitan city . The only thing I didn't enjoy was the subway .   was it that crowded ?   yes . There were always so many people . After taking the subway during the rush hour , you ’ ll envy sardines in their cans .   oh , maybe I can take the bus or even rent a car .   that's a good idea . Wish you a great vacation ! 