China is a new economic superpower in world stage no nation came closed to china. If they conquer Taiwan , Taiwan will be so much developed.
If I understand correctly, you’re saying no nation comes close to China? Can you back that up with sources?
Have you even checked how well Taiwan is already doing? Per Capita they are more wealthier and developed than West Taiwan (China 
).
Let’s say it is true, that China is the greatest country on the planet on every metric there is. Taiwan doesn’t want to be part of China. 24 million people want to stay independent. Do you really think like a dictator? You really want to enforce someone else’s wishes upon millions of people? That’s not civilized. There are also other means than military invasion to come together. But it seems you support violence?
One last question, how did you end up on this forum? TZM is not about dictatorship. It’s about direct democracy based on openly available research centers, using the scientific method in an open-source culture for social concern. While using the planet’s resources as a finite pool to base decisions on. That transition requires also a decentralized government with free speech. That for sure is not the climate in China/Russia.