HAYMARKET\'s regulars weave every week in front of stalls full of broccoli and bananas, mangoes and melons, grapes and garlic, potatoes, persimmons and pears. When a woman fills a large carton with about 10 pounds of the produce, a vendor adds the total to his mind. \"Six dollars,\" he said. \"There are only five,\" the customer replied in crappy English, holding many crumpled dollar bills in his hand. \"Close enough,\" the supplier turned to the next customer . \". This is Haymarket\'s usual practice, a maze of about 50 outdoor stalls selling cheap produce near Blackstone Street in downtown Boston on Friday and Saturday. Many stands are run by the same family, with two, three or several generations. Paul pizazza, 78, began helping his father sell chili peppers 70 years ago. They called him \"Poly Pepper\" \"How many times have he set up this booth? \"Too much,\" he replied. However, the daily life of the square and the tradition of Haymarket itself now face a challenge, unlike any challenge that the market has withstood since the opening of around 1830 of Faneuil Hall. With the big digging work almost done, city planners talk about folding Haymarket into a market zone that will extend from Blackstone Street across Ross Kennedy Greenway to the north end, With a new high-end area in the city center, vendors can\'t help but ask if they are suitable. Vendors\' horse-and- The horse fleet succumbed to the trolley, most of which were replaced by a larger tarp There is a wooden frame. Suppliers are not sure if they can withstand the opening of the East Boston tunnel in 1934, building a central artery at the top of the tunnel in their 1950 s, or building a nearby government center ten years later. But they did, like Haymarket\'s Big Dig that lasted more than a decade, and this dig tore the arteries and found new ground around. Recognizing that tradition alone is not enough, suppliers in the 1950 s were assured in national legislation guaranteeing continued operations in Haymarket; In the 1980 s, the city passed a similar regulation. According to an agreement between the Massachusetts toll roads authority and the Haymarket Trolley Association, large excavation buildings near the market are closed at 2: 00 every Thursday night. m. And close on Friday so that suppliers can set up and operate. But since Greenway started working hard in May, Haymarket sellers Got used to it long ago-again, off- Re-enforce city regulations Faced with stricter scrutiny. Customer double Vehicles parked now are often ticketed. The vendor\'s booth has to be cleaned up several times a day, and its floors are usually just wooden pallets. \"Haymarket is a unique part of Boston,\" said Mayor Thomas Menino . \". \"My parents took me when I was a child. I don\'t want suppliers not to be involved in the Boston landscape. We hope people can buy fruits and vegetables that are affordable. But [the vendors] I have to meet us halfway. They cannot continue to live outside the rules. We must have a constructive dialogue with them.