Ancient Linzi

Upon occupying Linzi in 221 BC, King Ying Zheng of Qin completed his conquest of the Chinese rival states and declared himself the first emperor of China shortly afterwards.

"Seven broad avenues, some 20 metres (66 ft) wide and over 4 kilometres (2.5 mi) long, ran north-south and east-west, roughly forming a grid pattern.

"[1] In the Records of the Grand Historian, the population of Linzi in the fourth and third centuries BC was said to be 70,000 households, with at least 210,000 adult males.

In pits near what is considered the tomb of Duke Jing of Qi, over 600 sacrificed horses have been found arranged in two rows.

The mtDNA was reexamined and the initial test was found to be wrong, with results showing European mtdna sharing no links to the remains found in the graves, and the study says it "highlight that ancient mtDNA data obtained under different sampling schemes and subject to potential contamination can easily create the impression of drastic spatiotemporal changes in the genetic structure of a regional population during the past few thousand years if inappropriate methods of data analysis are employed.