India has fractured the crust of east Asia into several subplates which have been pushed far to the east and southeast as the collision has progressed. The South China Sea opened as Borneo moved away from China. Also, Japan separated from the mainland, but it is not yet clear whether this was related to the collison of India and Eurasia
The animation starts at 60 million years ago. India pushes blocks of Asiatic crust eastward. Continental margin rocks smear along the margin of Southeast Asia, while the northern part of India thrusts beneath Tibet. http://www.uwgb.edu/DutchS/platetec/closteth.htm