What did the minorities in the south of Qin dig out to conquer it?

Baiyue was a minority in the south of Qin Dynasty. In order to conquer Baiyue, Qin Shihuang dug a spiritual canal.

Lingqu, called Qin Chisel Canal, Lingling Canal, Douhe Canal and Xing 'an Canal in ancient times, is a great project created by the working people of ancient Han nationality. Located in Xing 'an, Guangxi Zhuang Autonomous Region, it was opened to traffic in 2 14 BC. Lingqu from east to west connects Haiyang River in the east of Xing 'an (the source of Xiangjiang River flows from south to north) and Darong River in the west of Xing 'an (the source of Lijiang River flows from north to south). It is one of the oldest canals in the world and has the reputation of "the pearl of ancient water conservancy buildings in the world".

After the state of Qin merged with six countries (Korea, Zhao, Wei, Chu, Yan and Qi), in order to open up Lingnan and unify China, in the 26th year of Qin Shihuang (22 1 year BC), Tu Youyou was ordered to lead a 500,000-strong army to March south to Guangdong, and all armies wanted to occupy a key pass in Wuling, and one of them occupied the mountain pass at the junction of Hunan and Guangxi provinces. At first, it was resisted by local ethnic groups, and soldiers could not enter for three years, so it was difficult to transfer their salaries. In the 28th year of Qin Shihuang (2 19 BC), Qin Shihuang ordered Yu Shilu to be in charge of military supplies, and led soldiers and civilian workers to build an artificial canal between Xiangjiang River and Lijiang River in Xing 'an to transport food. In the thirty-third year of Qin Shihuang (2 14 BC), Lingqu was dug, and Qin Shihuang quickly unified Lingnan.