What should I do if my watch is broken?

Most people, at the beginning of buying a watch, are filled with joy in selecting, appreciating, and comparing. They are immersed in the halo of good watches from various famous brands, in the boasting of various advantages and benefits by salespeople, and in the immense satisfaction and joy of shopping places. Few people think about what would happen if such a high priced watch broke, and what should they do? Because most people subconsciously acquiesce to a habitual thinking, such an expensive watch should not have many problems, right? Shouldn't it be easy to break? Even if it breaks down, there will still be professional after-sales service, right?