If you don't know how to find a topic, is it okay to get familiar with it? Every time you can exercise near the fitness equipment near the chat-up object, when you have eye contact with the other person, smile and politely nod to her (note that it is a natural smile, you can smile shyly, but you can't laugh obscene), so you can greet and chat with her normally for a week. At this time, because of the previous foreshadowing, she will not ignore a pair of you who are friendly to her because of strangeness.