Practical way to time travel in past. I am talking about a scientific theory, not any paranormal activity or any magic or something. With the current technology we can look into the past, in every corner of the earth, every moment in the history no matter how old it is.
Some american dudes visited china and they are talking about their experience of their stay. Now this is what I call the first-hand-experience. Their words describe the true flow of their experience. For some reason I loved it. The video is long (about 10 mins) but its worth watching it.