Since Liu Juan's real identity had been revealed, she didn't have to continue her job as Mo Jiang's secretary. Moreover, even Mo Jiang didn't want someone whom he didn't trust to work for him.
Although he had asked her to have a partnership with him only to kill her boss still, he had a hard time trusting her. Strangely enough, even after years of working under her boss, Mo Jiang found it weird that Liu Juan didn't even know her boss' name.
What if it was her strategy to agree to his partnership and kill him instead?
Thus, Mo Jiang had his guard up for the time being.
Nevertheless, Liu Juan wasn't affected by Mo Jiang's over-careful attitude, she was only concerned with her and her big sister's freedom. Thus, she turned a blind eye to him, be just like the way she was with Bo Xiao when they worked together before he betrayed her.
