Other merchants and artisans, who made up the rest of the "chōnin", came without such promises. Some were first hired as servants for samurai or wealthy merchant families and decided to stay in the city even after their contracts expired, though most moved to Kanazawa for no reason other than the commercial opportunities the city presented. The government further facilitated growth by responding to the needs of these newcomers with projects like the Sai River Project. Because the Sai River split in two and the castle was located in the center, a part of the riverbed was unusable. In the 1610s, the construction project diverted the secondary stream into the main river, thus creating usable land, where four new wards opened for "chōnin" settlement. Some of these poorer merchants became successful enough to compete with chartered merchants for city administration positions, but many supported themselves by making and selling low cost goods, such as umbrellas and straw sandals, for mass consumption. This signifies that the commoner population of Kanazawa began to generate its own consumption demands, thus stimulating even more growth.