Indonesia Passport Holder flying to Taipei with Transit Option in China

Yenni, your itinerary will be covered by 24 hour visa free transit and you do not need any kind of visa. Since your layover is very short, you will just walk from one to the other gate and you will not be a subject of immigration and customs inspection and you do not need to perform any formality nor fill out any forms. As you can see, pretty easy and straightforward situation that you will encounter in Xiamen. Have a nice journey.