This statement is false. Mao Zedong did not turn his back on the centuries-old practice of using personal portraits as political propaganda. In fact, he took advantage of this. His personal portrait was displayed everywhere in China, including in the houses of private citizens. This was a common propaganda strategy among communist leaders, including Lenin and Stalin.
Its unique interval is that between 6-7 -- the whole plus half step (or augmented 2nd). It can be thought of as a natural minor scale with a raised 7 scale degree.
