Here's a short story:

Would you like to go to Beijing, our capital? It's far away from Guangdong. It's 2313 kilometers from Beijing to Guangdong. The city of Kunming is 2216 kilometers away from Guangdong. It's always very warm there. But it's very hot in summer in Wuhan. It's 1084 kilometers from Guangdong to Wuhan. Changsha is near Guangdong. It's 726 kilometers from Changsha to Guangdong. Do you know which city is the biggest in China? It's Shanghai. It's 1811 kilometers from Guangdong to Shanghai. If you travel by air, you'll find it very interesting and fast enough to fly from Guangdong to Beijing. It only takes you about four hours and you'll get there easily, safely and unhurriedly .But traveling by train is quite different. You have to stay on the train for over thirty hours to arrive in Beijing. More and more people like to travel by air. You can see why, can't you? (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Is Beijing a capital?
Guess: yes

Question: Which place is further from Guangdong, Beijing or Kunming?
Guess: Beijing

Question: What temperature is Kunming usually?
Guess: warm

Question: Which place is closer to Guangdong, Wuhan or Changsha?
Guess: Changsha

Question: Which place is closer to Guangdong, it is Beijing, Kunming or Shanghai
Guess: Shanghai

Now answer the following question in the same format.

Question: What is the most time efficient way to get between Guangdong and Beijing?

fly