China and Greece are two countries that have friendly relations with each other. It's kind of like when you have a friend that you like to play with and you both enjoy each other's company.
China and Greece work together on many things, such as trade and investment. Trade means that they buy and sell things from each other. China might buy things from Greece like olive oil or furniture, and Greece might buy things from China like electronics or toys.
Investment means that China might give money to Greece to help them build things, like roads or buildings. This helps Greece because they can use the money to make their country better and improve the lives of their people.
They also have cultural connections because they are from different parts of the world and have different traditions and customs. It's like when you meet someone from a different country or culture and you get to learn about the things that they do and the way they live.
Overall, China and Greece have a positive relationship and like to work together to benefit both countries.