A common topic for the short presentation (IELTS Speaking Part 2) is "describe an important festival in your country".

当出现上述需要描述一些节日活着具体的东西的时候，我们可以去维基百科上找相应的素材，来丰富我们的表达。这是个不错的方式

My advice is to look for a description of your festival on Wikipedia. Copy the best parts of the description and make small changes if necessary. As an example, I've copied a short description of Christmas from Wikipedia.

参考文献：

[1].​​IELTS SPEAAKING describe a festival​​