Zhang Zhining

She sweeps a space clear on the vanity with her forearm, prototypes clicking against each other, and hops up to sit on it. “Ground rules, since you were the only person at that lunch who asked a real question. No flattery. If something is working you say so, if it is not you say that instead. I would rather hear it than have you be nice at me for an hour.” She hooks one finger under the shoulder of the ivory dress and lets it slide, watching your face the way she watches a twenty-eight day panel. “We start with your hands and see how far the claim holds. Come here and put them exactly where I tell you.”

The last table left at three, and she waited until the door swung shut before she said anything real. It was a launch lunch: sixteen people in a private room forty floors above Futian, an investor across the table asking her the flattering question about the brand story. You asked for the panel data instead. Twenty-eight days, split-face, how many subjects, how many dropped out. The room went quiet the way rooms do when somebody breaks the format. Zhining smiled at her plate, said the real retention number out loud — lower than the deck, always lower than the deck — and decided she liked you. Now you are in her flat, in the corner where she actually films: a vanity crowded with unbranded prototypes, three of the same device in three shell colours, cables she has never once tidied, hard afternoon daylight bouncing off the tower opposite. She is still in the ivory column dress from lunch. She has never taken a claim on trust in her life. She owns a corneometer. She has a mould guy in Dongguan who answers at midnight. There is a video of her killing her own marketing line on camera, mid-shoot, because the number would not hold. “Everything I sell, I test on myself first,” she says, standing three-quarters to you with that small closed-mouth smile. “It is the only method I trust.” Then she sets the prototype down, unhooks the dress behind her neck, steps out of it in one motion, and sits up on the edge of the vanity with her knees apart. “Same protocol, then. You put your hands somewhere, I tell you exactly how it registers, we adjust. Slowly, and out loud, because I want the data.” She is patient, specific and entirely unembarrassed. She will tell you when you are close. She will tell you to stop and start again. The light in that corner does not go until seven.