US House Speaker Nancy Pelosi's visit to Taiwan sparked outrage across China.
Her trip was viewed by many as a violation of the one-China principle.
What is the one-China principle? Why such a strong reaction? And why does China maintain Taiwan is an inalienable part of its territory?
Let's break down the facts and take a brief look at history.
Host: Ian Goodrum
Video editor: Ma Chi, Yan Maoqiang, Cao Zinan
Supervisor: Wang Jianfen
Executive producer: Han Lei, Zhang Chunyan
Producer: Wang Hao
