great thanks in advance! Very impressed by your continuous dedication to this forum, as according to my understanding, your life in HBS now should be very exhausting?~ Stayed up till 2am every day?
To liuyongmei: According to my observation,HBS students' length of working experiences range from 0 year to over 7 years. Average is 4 years(Not official statistics, you can find the answer on HBS website). The key is not how many years you have worked but how well you demonstrated your leadership potential.
To Withmoon, Every applicant needs not only demonstrate his or her outstanding strengths but more important, convince admission officer through your stories. It's not specific trait but your whole consistent and convincing package that attracts schools. Each school are looking for quite different sets of characteristics or styles of applicants who fit with the school. But I think Leadership, teamwork mindset are primary characteristics that most schools are looking for. Hope it helps.