I believe that Tamil were brought to Ceylon from India because the British thought hey were more docile workers.
Tamil Tigers were supported by the India Tamil region and China supported Ceylon against the Tamil Tigers.Another example of China going against interest of China.

Now I am happy the LTTE got defeated.
But this was part of China’s Great Game against India ands and shows the west is impotent.

This lesson that China is more to be feared and appreciated will be noticed in the East.

This will have other geopolitical consequences.