Zheng Xiao is Jiang Zao’s best friend. She appears only at the very beginning of the story. When Jiang Zao, dressed in her wedding gown, suddenly runs out of the lounge and snatches Zheng Xiao’s car keys, Zheng Xiao is bewildered, calling after her “Zao Zao!” as she chases but cannot catch up. She seems to be a loyal friend who trusts Jiang Zao enough to lend her new limited‑edition sports car without hesitation. No further details are given about her personality or background, but her brief role highlights the urgency of Jiang Zao’s mission to save Fu Yanci.