Lei Jun, the 54-year-old founder of Xiaomi, is still full of energy. On the evening of August 14th, Lei Jun held his fourth annual speech at the Beijing National Convention Center. The theme of the speech was “Growth”. The setbacks and thinking faced by Xiaomi in the process of high-end in the past three years. The keynote speech of more than an hour, plus the follow-up new product launch conference of more than an hour, Lei Jun finished the speech by himself, from 7:00 p.m. long record. According to industry rumors, this time Lei Jun’s speech, the PPT alone made 480 pages, except for a few minutes of rest between…