Long Xi once again considered the highest "Happiness Index" in the world. The index was proposed by the King of Bhutan. Why was the Happiness Index of Bhutan so high? In fact, Bhutan rarely had communication with the outside world. The sense of happiness of the Bhutanese was like that of a frog at the bottom of a well.

The journey in the clouds was worth trying in Bhutan. You might never forget the experience!

"Captain" Xiaolu was driving his private airplane. ...