The reason could be a combination of factors. Maybe her style of dress was similar to what's associated with that profession in people's minds. Or perhaps there was a jealous coworker who started the rumor to cause trouble for her.
Maybe it was because of her outfit or the way she carried herself. Could be some misunderstandings based on appearance.
It could be due to a series of coincidences and false assumptions. Maybe someone saw her in a certain situation that led to the wrong conclusion. Or there might have been some malicious rumors spread about her.
Chapter 420, "Who Says the Attacker Can't Attack the Attacker?", is the clearest early answer because the buildup finally cashes out in a real clash. A useful checkpoint is the way the scene starts with After choosing to defend, Guan Xiong quickly made a decision.
Chapter 258, "Explosive! Jiang Li and Director Sun Are Having an Affair!", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event.
Chapter 559, "This is the Worldview of the Main Female Lead", is the clearest early answer because it turns Dean Yu's situation into a concrete plot event. The chapter turns that into something concrete by moving from You!" Ai Xiaochun gasped, unable to speak, her teeth clenched as she...
Chapter 455, "She is Entirely My Weakness", is the clearest early answer because it turns Tai Chi's situation into a concrete plot event. It opens with The marathon-style competition ultimately ended with Shang Shuyue...
Chapter 538, "You Won't Get Angry No Matter What I Ask, Right?", is the clearest early answer because it turns Right's situation into a concrete plot event.
Chapter 424, "He Must Be Very Strong", is the clearest early answer because it turns Ji Yanbai's situation into a concrete plot event. It opens with Shh!" Jiang Yan, who was leading the group, turned around and made a... and closes on Isn't this just exploiting a loophole?!.
Chapter 256, "Bonfire Feast", is the clearest early answer because it turns Buddha Beads's situation into a concrete plot event. The chapter gives readers a real answer by opening on Turning around, Jiang Yan and Zhao Lang found their heads had been...
Chapter 496, "Hot Pot Tonight!", is the clearest early answer because it turns Hot Pot Tonight's situation into a concrete plot event.
Chapter 341, "Whose Child Is Jiang Cheng Really?", is the clearest early answer because it turns Li Ruofang's situation into a concrete plot event.
Chapter 457, ""Back Against the Wall", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event.