Talk about some relaxing topics, such as college life, what good movies are there recently, and even talk about reference. Maybe this is your topic, too. As soon as you say it, it will flow like a flood. In fact, girls talk more than boys, and the main reason for silence is the lack of topic entry. Don't ask practical questions at the beginning. What family background have you talked about ... It will make people uncomfortable. If you really want to know, you can ask an introducer.
Note: Many girls like men with depth. Talking too much really makes people feel immature. You can pretend. Don't say too much at first. Your words may be immature in the eyes of strangers, but as long as they are not bad in nature, they are also cheerful, which requires careful observation and identification by the other party. Even girls who like deep men will not refuse if they meet a knowledgeable and humorous boy. Good luck.