At the university graduation ceremony, U.S. President Trump recommended that business students join factories and workshops to "move bricks, and don't think about financial speculation every day." He told business students not to just use your talents for financial speculation, but to use the outstanding skills you have learned and mastered to devote yourself to the construction of new factories, workshops, shipyards, and even cities that are rising across the country. Just make real efforts like forging steel and pouring concrete, and don't just build a strong investment portfolio.

Apple CEO Cook previously talked about the return of iPhone manufacturing to the United States. It is not impossible, but it depends on the "robotic arms" technology reaching a certain scale and precision. "When this technology reaches commercial standards, we will move production to the United States." Cook said. More importantly, after the technology reaches the standard, labor is still indispensable. This is also the biggest headache for Apple.

Because according to the U.S. Secretary of Commerce, American workers will not be engaged in basic assembly tasks such as screwing, but will serve as technicians in drive factories and enjoy high-paying positions.

However, in Cook's view, Apple is unwilling to hire a large number of workers (in the United States), believing that this will increase the company's risks, so returning iPhone manufacturing to the United States is a false proposition, not to mention that the supporting industrial chain for production will take a long time to be completed.