How old is Deng Jiaxian's daughter going to the countryside?

Deng Jiaxian's daughter, Kloc-0/4 years old, went to the countryside because she was persecuted by the Cultural Revolution and Deng Jiaxian Thought. Because he thinks that even the daughter of a scientist should be the same as others and not special. If you want to know more, I suggest you watch Five-Star Red Flag Flying in the Wind, which records the story of "two bombs and one satellite" created by scientists in China. It has provided great help to modern history.