Have you ever used the drift bottle in your QQ mailbox? You don't know who will receive a letter sent through a floating bottle, but you will also "pick up" a floating bottle from a stranger. Isn't it interesting? In fact, floating bottles were one of the limited means of communication across the vast sea in the Middle Ages and a symbolic symbol of human cultural exchanges in the maritime era. Ancient sailors packed letters tightly in bottles and threw them into the sea. These bottles then "drifted with the flow", hoping to be picked up by relatives in the distance and bring them surprises and blessings. Is this very unreliable?
This is not a fantasy. It is entirely possible to rely on the ocean to send messages. Ocean currents on the surface of the global ocean are constantly circulating circulation systems, and large and small ocean circulations are also intertwined and influence each other, so floating bottles floating in the ocean currents can cross the ocean. However, the journey of the floating bottle is full of unknown mystery. I don't know how long it will be drifting in the ocean and where it will drift. It may sink to the bottom of the sea, be swallowed by whales, or be washed up on the beach and exposed to the sun all year round. Only the extremely lucky ones can be finally picked up and fulfilled people's wishes.