A skeleton and some burial objects are found near Changzhuang Reservoir in Zhengzhou, Henan province, Oct 27, 2017. [Photo/VCG]

A total of 73 ancient tombs were discovered near Changzhuang Reservoir in Zhengzhou, the capital city of Henan province, and archaeologists preliminarily concluded that the tombs' owners dated back from the Eastern Zhou Dynasty (770-256 BC) to the Han Dynasty (206 BC-220). Just six months ago, more than 40 tombs were already found nearby during a municipal construction.

According to archaeologists, several mysteries confused them during this excavation. Some tombs are found empty without skeletons. Some unearthed skeletons are not complete, with the skull missing, the upper body missing or lower parts of the body missing. Also, traces of metal binding are visible on some legs.