Zanjan is known for its beautiful handcrafts such as knives, traditional sandals, called charoogh, and malileh, a handcraft made with silver wires. Zanjani artists make many things like various decorative dishes and their special covers as well as silver jewelry. In ancient times, Zanjan was known for its stainless and sharp knives. But this tradition is gradually becoming extinct by introduction of Chinese-made knives into the market which are far cheaper, more abundant and of course less artistic[citation needed]. Many villagers today are traditional carpet weavers, perhaps Zanjan's most popular handcraft. Zanjan's population boasts the highest level of happiness among the people of 30 other provinces in Iran, according to a detailed survey conducted by Isna.[4]