The old chapter of Bama tea industry is true. According to relevant public information, the names of the hills in the Laobanzhang Pu 'er tea producing area and the tastes of Yunnan Pu 'er tea industry are different due to different geographical environments. It is true, safe and reliable to define Pu 'er tea with a specific taste by the mountain name of the ancient tea-horse road in the calendar.