Okay, so the Chinese Communist Party is a group of people who work together to run the government in China. When someone wants to become a member of the Communist Party, they have to take an oath.
An oath is like a promise that you make. It's like when you promise to always be kind to your friends or to share your toys. The Communist Party oath is a promise that new members make to follow certain rules and beliefs.
The oath says that new members will always be loyal to the Communist Party and to the people of China. They promise to fight for the rights of the people and to work hard to make China a better place.
They also promise to keep the Party's secrets and to never do anything that would harm the Communist Party. This is because the Communist Party is very powerful in China, and it wants to make sure that only trustworthy people are allowed to join.
So, when someone wants to become a member of the Communist Party in China, they have to take this oath and promise to always be loyal, work hard, and keep secrets. That's what the Communist Party admission oath is all about!