The story of writing begins with the background, canvas. We know ancient Black Egyptians were advanced seafarers, and the development of sail material must have started early on. This is especially true since reeds, rushes, and hemp were plentiful in upper and lower Kemet (Egypt).
Amazingly, the same is valid for the development of ink.
Since few realize that the largest population of Africans outside of Africa is in India, the migration of ink technology from Africa to China is not considered. Tribes such as the Bonda have been in India since the time of the Old Kingdom Black Pharaohs.