U.S. House Speaker Nancy Pelosi's visit to Taiwan has caused great tension and controversy across the Taiwan Straits, which is a serious violation of the provisions of the three China-U.S. joint communiqués. However, the U.S. insists its one-China policy has not changed. Does Pelosi's visit have any legal standing? While the historical controversy of the Taiwan question is clear, who is undermining peace and stability across the Taiwan Straits? Join us for "The Past and Present of the Taiwan Question," only on CGTN.