《华阳国志》的记载：自秦汉置犍为郡，郡治就在今彭山县内(武阳国在彭山，蚕丛在青神)，那时的武阳至眉山到青神一带，物产丰富，商贾众多，市场繁华，西汉王褒的《瞳约》就记载“武阳买茶”，这里是最早的茶市。
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