There is no doubt that the introduction of the digital yuan will raise China to another higher level compared to the level that it occupied earlier. Its own official digital currency is a guarantee of complete independence from the US dollar hegemony in the future.
There is nothing special happen to world with this because no other country going to invest or doing any trade with this all just one thing happen like they will have more control on their own peoples and their indpedence and they will more rich with this all as they will able to check all things inside country and can manage for their own sake and better profit.