留学生在介绍自己时，通常包括以下几个方面的内容：

开场打招呼：

使用礼貌的语言开始自我介绍，例如“Good morning, everyone.”或“Hi, everyone.”。

姓名：

清晰地介绍自己的名字，并可以告诉别人可以如何称呼自己，例如“My name is [姓名]”或“You guys can call me [昵称]”。

籍贯：

提及自己的出生地或国籍，例如“I am from [籍贯]”或“I was born in [城市], [国家]”。

学历：

简要介绍自己的教育背景，例如“I am currently studying [专业] at [学校名称]”或“I have a degree in [专业] from [学校名称]”。

爱好和兴趣：

分享一些个人爱好或兴趣，这有助于展示个性和增进了解，例如“I enjoy reading books and hiking in my free time.”。

优点和技能：

强调自己的优点和技能，这些可以是学术上的，也可以是个人特质，例如“I am a good team player and have strong communication skills.”。

致谢：

表示感谢，例如“Thank you for taking your time to listen to my introduction.”。

```

Good morning, everyone. My name is [姓名]，You guys can call me [昵称]。I am 21 years old, born in Heilongjiang Province, Northeast of China. I am currently studying [专业] at [学校名称]. I have a passion for [爱好或兴趣]，and I am always eager to learn new things. I believe that my strengths lie in [优点或技能]，which I have developed through my academic pursuits and extracurricular activities. I am excited to be a part of this community and contribute positively to its diversity and dynamism. Thank you for taking your time to listen to my introduction.

```

通过这样的自我介绍，留学生可以有效地传达自己的基本信息和个人特点，同时也能给听众留下良好的第一印象。