Chen Bin. Chen Bin is a well-known calligrapher in Longwan District, a member of China Hard Pen Calligraphy and a trainer of China Hard Pen Calligraphy. He teaches calligraphy knowledge to children and parents in his area and is the best calligrapher in Longwan, Wenzhou. Longwan District, belonging to Wenzhou City, Zhejiang Province, is located on the south bank of the estuary of Oujiang River, facing the East China Sea in the east, facing Dongtou District across the sea, and connected with Dongtou District by Oujiang Nankou Bridge and Hannah Quinlivan Bridge.