1, Lintao County has a long history and is located at the main road of the ancient Silk Road. It has been a famous city in the northwest since ancient times. The county was founded in 384 BC and has a history of more than 2,400 years. At that time, it was called "Didao", and "Didao" refers to the place where Diden lived.

2. Gangu County is a county under the jurisdiction of Tianshui City, Gansu Province. Located in the east of Gansu and northwest of Tianshui. Weihe river basin. Gangu county has a long history. It has a history of 2708 years. So Gangu County has a longer history.