Change in plans

So originally i was going to fly to beijing, stay there for a week, go to Chengdu and fly back from Shanghai. Because i found a cheaper plane and a better date if i flew back from beijing, the plan changed, and now that Yvonne knows that the apartment will be full in september, beause her roommate comes back from vacation, i thought it might be better to put the beijing trip on the last week instead. Now i will reach beijing on my birthday and will most of the day we will sit in train.