“…Despite the historical and ecological complexity of East Asia, northeastern Asia, consisting of modern northern China, Korea, Mongolia, eastern Siberia, and Japan, blade technology consistently appeared in the Upper Paleolithic archaeological record from the late Marine Isotope Stage (MIS) 3 to MIS 2 (ca. 40,000-11,000 BP) (e.g., Brantingham et al, 2001;Vasilevsky, 2006;Bar-Yosef and Wang, 2012;Gladyshev et al, 2012;Morisaki, 2012;Wang and Qu, 2014;Yi et al, 2014;Lee, 2016;Terry et al, 2016). For example, in China, blade technology probably appeared due to human southward migration to northwest China around 38,000-34,000 cal.…”