Man power with all the infrastructure let the China to become the manufacturer hub of this world but since covid attack every country realized that they shouldn't be dependent on one country for everything they import so which resulted in some of the biggest companies moving their plant to other countries. Probably China may surpass US economy in the next few years but I swear that US is not going to let them to make it is easier.
No one claims that the United States will calmly look at how China becomes the number one economy in the world, although it is quite strange when they begin to be surprised and even arrange hysteria about this, that a country with 1.4 billion people can overtake a country with 329 million people. Yet, mathematically, China has four times the population of the United States, and the economic growth rate in recent decades has been several times higher.