On the surface, it does look like China could invade Taiwan. And it may have been their plan.. But plans change.
The short answer to why China probably will not invade Taiwan is.. The suprising results of Russia's invasion of Ukraine. There are two parts to this reasoning.
1) China's military model and equipment are copies of, or very similiar to Russia's. Russia's invasion plan was to take Ukraine in 3 days. It failed due to a poor military model, and sub-par equipment.
2) The sanctions placed on Russia have hurt them. China could not survive without world trade. Both to export goods to fund thier economy, and inport the goods they need, such as food.
If China invades Taiwan, the entire global economy eould collapse. But China would suffer the most under sanctions. In short, China would be commiting suicide. They now know this, and their war games are a bluff.