The oldset rock discovered on the Earth is the TTG gneiss but whether there was oldest oceanic crust and how continental crust formed deal with all aspects of continental dynamics. Among them is when the plate tectonics started, which has been a front scientific question for decades. The popular answer is from Neoproterozoic, others suggest Paleoproterozoic or Neoarchean, or even some believe the plate tectonics started from the occurrence of water. In various marks identifying the plate tectonics, ophiolite and high-pressure metamorphic belt are no doubt the most important issues. The former implies that the old oceanic crust slab was involved in orogenic belt, and the latter probably indicates that supracrustal rock unit was subducted under deep crust or mantle and can be lithological evidence of subduction, denudation and collision. Based on the discussion and comparison between Archean greenstone belt and ophiolite and between UH-HP/UT-UHT granulites and Phanerozoic HP metamorphic belt, authors come to a primitive conclusion that these two can not be used as the convincing evidence to support plate tectonics. The paper also discussed Archean continental formation and rift-subdution-collision tectonic process of Paleoproterozoic mobile belts of the NCC. It is proposed that the Neoarchean tectonic pattern of greenstone belt-high grade region in the NCC probably indicates a dominant heat tectonic regime (mantle plume) with limited transverse movement. The micro-blocks were welded by greenstone belts, followed by metamorphism and granitization, completing craton process of stable continent. The tectonic regime is likely controlled by frequent moderate-scale mantle plumbs, accompanied by small-scale horizontal tectonic movement. The Paleoproterozoic supracrustal rocks in the NCC occur as a linear mobile belt with middle-grade metamorphism, multi-stage deformation, intruded by nearly synchronous or little later granitic intrusion and associated by Cu-Pb-Zn mineralization. Although there are no ophiolite slabs and high-pressure metamorphic belts, they demonstrate, more or less, some characteristics of primary plate tectonics.