These symbols which are radiocarbon dated to the 7th millennium BCE have similarities to the late 2nd millennium BCE oracle bone script. Put this writing in the MAYBE column. Scientists are still going through a process to verify this claim. If we can discover some intermediate links, yes, more missing links, we can firm up these symbols as early writing. They were discovered in 2003 on tortoise shells found in 24 Neolithic graves excavated in Jiahu, Henan province, northern China.