Problems concerning the emergence and geographical diffusion of food production in East Asia have long interested archaeologists and historians. However, attempts to reconstruct the chronology and diffusion routes from the so-called nuclear zones of both North and South China through the Korean peninsula and Japan have been less than convincing. In North China, the crops involved were millet (Setaria italica) and kaoliang (Sorghum vulgare); in South China, rice (Oryza sativa japonica and indica).
Detrital zircon provenance of the Late Triassic Songpan-Ganzi complex: Sedimentary record of collision of the North and South China blocks: Comment and Reply: REPLY