According to Chang, why hasn't Shangri-La implemented Radio or phonograph, yet? (Chapter Five)

From the text:

Well, that certainly beats everything! Why, with a phonograph and a radio you’d be all fixed complete! Perhaps, though, you aren’t yet acquainted with up-to-date music?”

“Oh, yes, we have had reports, but we are advised that the mountains would make wireless reception impossible, and as for a phonograph, the suggestion has already come before the authorities, but they have felt no need to hurry in the matter.”