Correction to: Scientific Reports https://doi.org/10.1038/s41598-020-68518-w, published online 15 July 2020


Yuanhong He was omitted from the author list in the original version of this Article. This has been corrected in the PDF and HTML versions of the Article, and in the accompanying Supplementary Information file.


The Author Contributions section now reads:


G.H. designed the study and supervised the field work. G.H., J.G., Y.X., L.C. and Y.H. conducted the archaeological investigations. Y.C. and Y.H. analyzed the stone artifacts. G.H., C.X. and Z.L. analyzed the data. G.H. drafted the initial manuscript, which was revised by G.H. and J.G. All authors approved the final version.