Red Deer Cave people lived 14,000-11,000 years ago in Southwest China. Their bones show archaic human features unlike any modern humans. Maludong femur matches early Homo erectus or Homo habilis from 1.5 million years ago. Femur has narrow shaft, thin cortex, buttressed walls, long neck, and large backward-facing lesser trochanter. Reconstructed body mass is 50kg, small for Ice Age humans. Longlin cranium is 10,500 years old and likely a modern-archaic hybrid. Archaics or hybrids survived late due to Southwest China's refugium environment. East Asia hosted multiple archaic species overlapping with modern humans. Denisova Cave shows Neanderthals, Denisovans, and Homo erectus with moderns 50,000 years ago. Red Deer Cave fits multiregional East Asian evolution pattern. Europe and Africa fossils misrepresent East Asian human history. No Neanderthals found south of Denisova in China. Red Deer Cave people were tropically adapted relics. Modern East Asians' ancestors interacted with these late archaics.