How many days is suitable for the first trip back to the country?
4–5 days is only enough to visit one city cluster (Beijing, or Guilin Yangshuo, or Hangzhou Suzhou); do not travel across regions. 7–8 days allows for the Jiangnan route, the Yunnan route, or Xi'an–Hexi Corridor. Only with more than 10 days should one consider Tibet, the Northwest grand loop, or a Sichuan–Yunnan combination. The real limitation is not how many places you want to visit, but the daily travel time and queueing at attractions—moving across regions consumes a lot of time.
4–5 days is only enough to explore one city cluster (Beijing, or Guilin Yangshuo, or Hangzhou Suzhou), do not cross regions; 7–8 days can cover the Jiangnan route, Yunnan route, or Xi'an–Hexi Corridor; only with more than 10 days should you consider Tibet, the Northwest grand loop, or a Sichuan–Yunnan combination. The real limitation is not how many places you want to visit, but the daily travel time and queue times at scenic spots—cross-region traveling will consume a lot of time.