what variety of clothes to pack for a tour between 13th October and 25th October in beijing.

Hi, based on the weather records of the past years, it shall be still warm in these cities except Shanghai, where it is still a little hot. Although you are more likely to meet sunny or cloudy days, several rainy days may also happen. In general, the temp may drop a lot in early morning and late night. Considering all, I suggest you prepare both long-sleeved and short-sleeved shirts, jeans, jacket or light cardigan, and simple rainy gear!