Wen Huan, the designer of the frosted water-blocking ring on the mouth of the cold brew tea glass bottle, had a complaint that "the fit was too tight, causing the bottle mouth to crack." On a rainy night in a convenience store, she bumped into Lin Yan, the boy who sat next to her eighteen years ago. He is the founder of an emerging tea brand, and he is facing a crisis due to a loose and leaking water seal. Wen Huan anonymously sent an improvement plan, but Lin Yan recognized it from the hand-painted texture - he saw the note she handed out but was too timid to accept it. The two met again in the process of "if the fit is too tight, it will collapse, and if it is too loose, it will leak." From technical competition to testing of one's mind, the two met again. When the cold chain in the north hardened at high temperatures, long-distance bumps and leaks, and repeated opening and closing wear and tear emerged one by one, Wen Huan realized that: the water-blocking ring was just one micron away from locking in the coolness, and a moment away from each other, there was only a passing chance. But this time, Lin Yan carved the late answer into the texture of the frosted circle.
