Instead of asking about the best travel season in China, ask which part of China is at its best during your time.
In spring, go see the new greenery and blooming flowers
The southern mountains and ancient villages are best suited to unfold slowly in spring, but also to allow room for rain and humidity.
In summer, replace the city with plateaus and river valleys
Avoid the hot core cities and head toward the southwestern mountains, northern grasslands, or high-altitude areas—your trip will be much easier.
Autumn is not just about red leaves
The sunlight in the northwest, the warmth in Jiangnan, and the harvest in the south all make autumn a perfect time for long-distance travel.