I will travel to Taiwan on February 23 to March 3 what clothes should I bring?

There is a big difference on temperature between Taipei and southern part of Taiwan. Which place do you want to go?
If for the southern part, you can take your summer clothes. If you go to Taipei, the average temperature is around 20C. You can take your T-shirts and jeans.

Hi I will go to Taoyuan County and Taipei

Ok, you need take along both long-sleeved and short-sleeved shirts. A coat and jeans are suggested to take along during that period. Besides, it may rain a little from time to time, simple rainy gear is also suggested.

Thank you very much Kelly You are a big help