There are a lot of salt wells in Sichuan.A salt well is much like a water well.People bring the well water up to the ground and then dry it in big pans over fire. In this way get salt. We can also get salt from salt mines.Some years ago, people in Jiangxi found a big salt mine and soon opened it.People there need no salt from other palce now. In the north of China, there are many salt lakes. Some of these lakes are very big. The salt in big lakes can even meet the needs of people for many years.