this guy is another speaker of mandarin ..he was the youngest professor in Harvard...claimed learnt mandarin in a few months during his collage as a challenge ...but one hell of an asshole Indian politician
the last USA ambassador to China mainland ROC, John Leighton Stuart said in his memoir that he can speak 10-12 Chinese dialects in areas south of the yangtze river. he can speak Beijing mandarin dialect. he said it's the easiest among the dialects to learn and speak.