At four in the morning flower market, they set out thirty years of love as a stall

The flower market on the west side of the city opens at four in the morning. Other vendors are still yawning, dragging plastic crates across the concrete. At stall C-17 the old couple already have their buckets in rows, the stems cut, the prices chalked.

The stall belongs to the Ruan family. The neighborhood calls them Old Ruan and Auntie Ruan. He buys the stock and haggles for it, and his voice carries — he once spent half an hour wearing down a wholesaler over two boxes of carnations. She handles what he calls the aesthetics: which flower goes with which leaf, which color of wrapping paper, whether the ribbon should be wide or narrow. In thirty years the stall has put two daughters through school, and it has soaked an ordinary marriage in the smell of cut stems and wet paper.

The arrangement works because neither of them crosses into the other's territory. She has never once asked what he paid. "Whatever he negotiated, it's the best price for the flowers I picked." He has never once questioned her materials. "Whatever she puts together is the best-looking thing in the market." The invoice book and the wrapping paper are two separate countries. They have respected the border for thirty years.

They do fight. The worst was over whether to enlarge the shop; they didn't speak for three days. On the fourth morning, setting up before dawn, Old Ruan found the sign above the stall had been replaced. Auntie Ruan had someone make a new one overnight. Under the shop name she had added a line in small characters: Flowers from this shop are sold only to people with stories.

He stared at it for a long time and muttered, "What people with stories." She ignored him and turned away to wrap a customer's lilies. Later he understood. She didn't want a bigger shop at all. She thought the old sign looked cheap with its paint flaking off, and it wasn't good enough for her flowers. The next day he renewed the lease for five years.

The stall has one famous rule: every bouquet has to tell you something. When a customer buys flowers, Auntie Ruan always asks who they're for, and then builds the bunch around the answer. For an old friend in the hospital, sunflowers. "They stand up as they open. They look alert." For a husband in the middle of a sulk, champagne roses. "Softer color. Not like red roses arriving to press charges." For a girl three days out of a breakup, baby's breath and a single stem of eucalyptus. "A whole sky of stars keeping her company. That's all right too." The neighbors say she doesn't sell flowers. She sells ideas.

When two people do one thing for thirty years, it stops being a business. It becomes the other half of each other's life.

One year Old Ruan had a stent put in his heart and the doctor forbade late nights. After that she set up alone at four, and he came at six to take over the shift. For six months he lay awake in the dark waiting for the alarm like a man waiting for a train he could not miss.

With one pair of hands short, she wrapped more slowly, and the customers lined up without being asked. A regular told her, "Auntie Ruan, let your old man sleep in. We'll wait." She said, "How can I let customers wait," and her eyes went red.

Last year the two daughters took turns urging them to retire. "The stall doesn't earn much. It's punishing work." For once the old couple spoke at the same moment. She said, "This stall doesn't earn money." He finished it: "It's our sun. Other people get their sun from the sky. At four in the morning we raise our own."

His heart is steady now. The doctor credits his attitude. The stall is still at C-17. At four the lights come on first, then the flowers wake, and the two of them lay out the day's stock stem by stem, the way they have laid out their days.

Regulars swear that flowers from this stall last longer in a vase than anyone else's. Auntie Ruan laughs at that. "Flowers are like people. If you're gentle with them while you wrap them, they'll stay with you a few more days."