After Gao Yao arrived in the Qin Dynasty, he accidentally discovered that Xiao Yue, a maid-in-waiting, looked exactly like his modern sister, Gao Lan, so he recognized Xiao Yue as his sister and asked Xiao Yue to call himself his brother (Gao Lan means Gao Yao's "brother" in modern times), which was very kind to Xiao Yue.
Abortion and Gao Lan are performed by the same actor, but they don't represent the same person.
Gao Lan didn't cross.