Shangguan Ning was not as confident as Zhao Anan thought she was.
Her hands were sweating because she had never used a gun before. Jing Yichen had given her a gun just this morning. Although he had taught her how to use it and she looked rather confident while holding it, but she was actually very nervous. It seemed so easy to watch others take away one's life but she didn't realize how difficult it was to aim at someone, herself.
A life would disappear just because she pulled the trigger.
Jing Yichen had not wanted to give her the gun because the gun powder might be bad for the baby. But after a moment of hesitation, he had decided to go ahead and give it to her.
When he went to be the bait to lead Lan Yu out earlier today, Lan Yu could have used the opportunity to do something to Shangguan Ning. Therefore, apart from getting stronger security to keep Shangguan Ning safe, he had left this with her as an additional measure.