For a collector named Zhang Wei, his interest in mobile phones is not limited to modern smartphones. In his collection, there are more antique mobile phones that have witnessed technological development, as well as modern flash memory cards that carry countless memories. Today, let's follow in Zhang Wei's footsteps and embark on a technological memory journey from antique phones to modern flash cards.

In the bustling metropolis of San Francisco, nestled amidst towering skyscrapers and bustling streets, lived a young software engineer named Alex. Alex had a passion for technology that bordered on obsession, but amidst his love for all things digital, there was one item that held a special place in his heart – an old, battered USB thumb drive.