Hi I am arriving into Harbin 4 Oct.

Will there still be sunshine and how long is the day light during that week? What is the temperature like during the day?

Is it less crowded than other cities during the golden week? I plan to depart for Dalian 7 or 8 Oct, will I still be able to buy the high speed train G or D tickets when I am in Harbin or is it best to buy before I arrive into Harbin?