Introduction to the Mabang Ancient Road: The ancient Taibai Pass leads to Heihu Township, Sanlong Township in Mao County and Longxi Township in Wenchuan. It is a shortcut to Caochao, Heishui and Li County. It is connected to the Songmao Ancient Road and is a tea An important branch of the Magu Road. Moutuo caravans were popular in ancient times, and there are still poems handed down by the caravans to this day.