The heightened tensions between China-Taiwan highlight the world's incredible reliance on Taiwan for semiconductors. Semiconductors go into everything from our smartphones to cars and refrigerators. This has been a key part of the U.S. and China’s rivalry over the past few years. Taiwan is estimated to host 20 per cent of the total global semiconductor capacity — and China and the U.S. happen to be two of the biggest consumers. Watch to know why China wants Taiwan.