Han Jingxue didn't call Chu Peihan right after speaking to Han Chenglin. She needed some time to persuade herself. After half an hour, Han Jingxue called Chu Peihan.
Although they had a quarrel, Chu Peihan still answered Han Jingxue's call because Han Chenglin told her that he would make Han Jingxue apologize to her. And she also wanted an apology. Han Jingxue had to pay for humiliating her.
However, she didn't pick it up until it rang for a long while and Han Jingxue almost lost her patience.
The moment Chu Peihan answered her call, Han Jingxue almost shouted at her, but she curbed her anger after thinking of Han Chenglin's words.
"Who's this?" Chu Peihan asked. Even though she didn't add Han Jingxue to her contacts, she knew it was her. She only pretended that she didn't know in order to annoy Han Jingxue.