ROC has 300K active and 3.9M reserve forces according to Wikipedia. Moreover, the Taiwanese people like the US much more than the Chinese. China putting troops

ROC has 300K active and 3.9M reserve forces according to Wikipedia. Moreover, the Taiwanese people like the US much more than the Chinese. China putting troops in Taiwan would be very hard to accomplish before the US could retaliate. Even if they succeeded, hold the island would be difficult when faced with internal sabotage and a US threat to reclaim the island. One of the first political acts of the US would undoubtedly be to officially recognize the state of Taiwan. Given how much of the world relies on Taiwan's manufacturing output, other countries would be close behind and China would be looking at a joint liberation force rather than China vs the US.