In the center of the city, there is a lane, where there are two celebrities, calligrapher Song Cao, and Prime Minister Lu Xiufu of the Southern Song Dynasty. Not far from the two houses, there is a pen-washing pool in the courtyard of Song Cao. Legend has it that the practice of writing was black water at that time, so we can see the hard work! Diao Liang Pai Dong, a literati's home! ___________