Why did Wang Xizhi study in Linchi?

There is a river at the foot of Linchuan in Wang Xizhi's hometown. There is a place by the river called Xincheng. There is a deep rectangular pool above the new town, where he often learns to write. Whenever spring comes, he comes here with paper, pen, inkstone and ink to learn to write. He used the ink in the pool and the water in the pool to wash the pen. Every time his black ink pen is put into the pool, a cloud of black ink immediately appears in the water. In this way, over time, the pool water will gradually turn black. As the water in the pool darkens day by day, Wang Xizhi's words grow day by day.