The "ancient script texts" were the ones that off and on since the late 2nd and during the 1st century BC had turned up, some discovered in the walls of Confucius's residence, or in Warring States period graves.
These "ancient script texts" emerged sporadically between the late 2nd and early 1st centuries BC; they were discovered both within the walls of Confucius's dwelling and in tombs dating to the Warring States era.