Chinese is not one of the oldest languages. It is old, but languages such as Sanskrit and Tamil are considered the oldest.
The world's oldest (of the seven existing) and smallest continent is Australia.
Africa
Asia
It is difficult to determine the "oldest" living language definitively, as languages evolve continuously over time. However, languages such as Tamil, Hebrew, and Chinese have ancient roots and are considered some of the oldest continuously spoken languages in the world.
It is Oceania and you suck.
Some of the oldest written languages still in existence include Sumerian, Egyptian hieroglyphics, and Chinese. These languages have ancient origins and continue to be used in some form or have influenced modern languages.
Africa is a huge continent. There are thousands of different tribes that all come with their own languages and religions. However, to answer your question politically correct, I'd say animism. But it is wrong to talk about a generalization that spans over a very diverse continent.
Africa
Africa
China
Lake Baikal is the oldest lake in the world and is located in Russia on the continent of Asia.