Upstream, a Chinese idiom, means to go against the direction of the water and upstream. It comes from "Erya·Shishui".
"Buddha Speaks of the Deer Mother Sutra" says: All meetings of love are due to causes and conditions. There will be parting in the union, and it is impermanent and difficult to last.
Twenty-one-year-old Yin Bing made a wish that no one knew about on her birthday, and took this as an opportunity to return to 12-year-old Yin Bing. In those few years, she created one miracle after another, making up for all the regrets of her youth. But is everything just the moon in the mirror and the flowers in the water? When she finally returned to the gloomy reality, she seemed to have found a way forward and new hope...
Intention: No road traveled is in vain, and any fate that should be encountered will always come to life at the right time. All regrets will be engraved in every memory in the future because they cannot look back.