Hi there! I will be in your country for almost 2 weeks (14 days) in October, and I want to concentrate on just 3 cities: Beijing, Shanghai (including maybe Shuzhou and Nanjing) and Xi'an. How many days would you spend in each city? I thought about 4-5 in Beijing, 5-6 in Shanghai (including the trips to Shuzhou and Nanjing) and 2-3 in Xi'an. Your take? Thanks!