Reply to comment by Hillaire-Marcel and de Vernal on "A sedimentary record from the Makarov Basin, Arctic Ocean, reveals changing middle to late Pleistocene glaciation patterns" [Quat. Sci. Rev., 270 (2021), p. 107176]. (15th January 2022) - Xiao, Wenshen; Polyak, Leonid; Not, Christelle; Wang, Rujian