The deformation of South and East Asia during the Cenozoic era has been significantly influenced by the early Tertiary collision between India and Eurasia. This collision initiated a cascade of events that substantially altered the region's geomorphology and drainage characteristics. On the Tibetan front, a prevailing notion suggests that the upper reaches of the ancient Yangtze River (known as the Jinsha River) once flowed into the ancient Red River, which served as a primary sediment source for the Tonkin Gulf-Yinggehai Basin.

On the continental margin of South China, certain researchers, drawing from provenance studies, have proposed that the Neogene sediments in western Taiwan primarily originated from the East China Sea Shelf Basin, which itself received sediments from the Yangtze River. However, prior to the diversion of the Jinsha River and the carving of the Three Gorges, the ancient Yangtze River likely lacked the sediment-carrying capacity to transport materials all the way to the East China Sea Shelf Basin.

In order to gain a more comprehensive understanding of the drainage reorganization, the evolution of continental margins, and the history of basins—especially the South China Sea and East China Sea—triggered by the India-Eurasia collision, our current focus revolves around six key issues:

1. Utilize detrital zircon data and structural observations from Vietnam to delineate the potential connection between the Jinsha River and the paleo-Red River. Additionally, investigate the likely causes of significant drainage reorganization in northern Indochina during the Miocene to Pliocene periods.

2. Employ detrital zircon data from both the northern onshore and offshore regions of Taiwan to corroborate the connection between the Yangtze River and the sediment sources in the East China Sea Shelf Basin and Taiwan.

3. Compile detrital zircon data from western Taiwan and its offshore areas to establish the plausible origins of sediment source regions.

4. Gather detrital zircon data from the northern margin of the South China Sea to Taiwan, as well as the East China Sea Shelf Basin, to analyze the impacts of the South China Sea's opening and the extension of the continental margin (i.e., rift-drift transition).

5. Assess the variations in the source-to-sink relationships from Indochina to the East China Sea, while considering their connections to significant plate interactions within this geographical area.

6. Synthesize the outcomes derived from the aforementioned studies and integrate them into paleogeographic reconstruction maps. This synthesis will facilitate the evaluation of the interplay between the reshuffling of tectonic blocks and the evolution of drainage systems.