According to Celebrity.com, Kuang Gangzhi's birthday is 10 June 9th, and 10 People born from September 23rd to June 23rd are all Libras, so Kuang Gangzhi is a Libra.
Kuang Gangzhi is Cai Tianfeng's ex-husband and is the same age as Cai Tianfeng. In 20 12, Cai Tianfeng, aged 18, married Kuang Gangzhi, aged 18, and gave birth to a son and a daughter. 20 15 the two divorced because of emotional incompatibility.