What's the relationship between Cui Hua and Xiong Da in Bears?

Xiong Dahe Xiong Er drifted to a city and was discovered by human beings. Zoo staff anesthetized Xiong Er and Xiong Dahe. Xiong Er, when Xiong Dahe woke up, he found himself locked in the zoo. He shouted: "let me not go out, let us go out!" " And shouted, "It's no use, they won't let us out." A voice came. Xiong Dahe and Xiong Er said together, "Who! Come out! " A beautiful female bear came out of the bear hole. The beautiful face instantly captivated Xiong Er, Xiong Dahe. The mother bear said, "My name is Cui Hua, and I have been locked up here for five years." Suddenly there was a Chingling, and a man said, "Dinner!" I saw the man send three cans of honey. Hungry Xiong Er looked at it and said, "How can I eat so little?" Cui Hua said, "There is only so much." "I have to go out! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! "Xiong Er said angrily. Xiong Dahe and Cui Hua agreed, so they began to try to escape from the zoo, but they didn't succeed once. They were a little discouraged until one night, they met a human from another planet (a girl of 10 years old). She has wings, infinite power, and the power to heal everything (they were shocked when they first met). With her help, they escaped from the zoo. She asked Xiong Da, Xiong Er and Cui Hua to bring their own forests. I didn't expect Logger Vick to come. Every day at noon and at night (because people are sleeping at noon and at night, they are rarely found), they harass Xiong Da, Xiong Er, Cui Hua and the mysterious man (because they don't know the names of people from other planets, let's call them the mysterious man first! ) So a battle in the city began. Finally, Cui Hua gave birth to a baby bear, but the battle with Logger Vick is not over yet.