The Potala Palace must come once in a lifetime. I was fortunate to encounter a super rich knowledge reserve Zhang Dao. The information density of the whole process is very high. The palace size year, important events, such as several treasures, said that Tibetan culture is more light, and I have very little contact with Tibetan culture and Buddhist culture. The feeling is not as deep as the friends with religious beliefs, but Zhang's explanation is really a must. I hope everyone can meet his group by fate.