Is Cai Jue Cai Mao's niece?

Cai Jue, a prostitute, was taken a fancy to by eunuch Cai Mao in an attempt to frame Qin Sheng, an imperial envoy. After a lot of things, from acquaintance to love, Qin Sheng still loves Cai Jue to death, but the reality makes Cai Jue unacceptable. In grief, Cai Jue cut Qin Sheng's hair.