The siblings are Yang Gang, 40, and Yang Wenzi, 30. Natural siblings (also known as natural sibling groups) is a sibling group in Chinese mainland. Yang Gang was born in 1982, and Yang Wenzi was born in 1992. By August 30, 2022, Yang Gang will be 40 years old and Yang Wenzi will be 30 years old. This group is also the only music group composed of brothers and sisters in China, consisting of western singer Yang Gang and singer Yang Wenzi.