Twin sisters Gao Ning and Gao Ding guide their daughters to practice acrobatics in Changchun City, Northeast China’s Jilin Province. Twin brothers Chen Kun and Chen Peng, now 40 years old, got to know the twin sisters, now 38 years old, when they learned acrobatics together. The identical twins paired off and each family has a daughter, who practices acrobatics with their parents. (Photo: China News Service/Zhang Yao)
