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Song Xiang had practiced martial arts since he was a child, and more than twenty years had passed. He had been taught by no fewer than ten masters.
Nevertheless, none of these masters really saw Song Xiang as a "disciple."
Why not?
Quite simply ... the emotional bond was not there.
There's a saying that goes, "The relationship between master and disciple is like that of father and son," meaning that the bond between master and disciple is so strong that the master regards the disciple as his own child, and the disciple respects the master as his own father.
One could even say that some master-disciple pairs are closer than biological father and son.
However, someone like Song Xiang was destined not to have such a bond because he did not understand how to respect others; how could a person who does not even respect his own parents respect his elders?