A great many famous characters made their mark in the history of Zhejiang. These include philosophers and ideologists such as Wang Chong, Chen Liang, Liu Ji, Song Lian, Wang Yangming, Huang Zongxi and Gong Zizhen; poets such as He Zhizhang, Luo Bingwang, Meng Jiao, Zhu Shuzhen, Zhou Bangyan and Lu You; painters such as Zhao Mengfu, Xu Wei, Ma Yuan, Huang Gongwang, Chen Hongshou, Ren Bonian and Wu Changshuo; calligraphers such as Yu Shinan and Zhu Suiliang; scientists such as Shen Kuo; dramatists such as Li Yu and Hong Sheng; educationists such as Cai Yuanpei and other famous characters such as Zhang Taiyan and Wang Guowei. More than one thousands of Zhejiang-born writers have gone down in history since Eastern Han Dynasty (25-220) until nowadays, accounting for about one sixth within the country. Since the May 4th Movement in 1919, great proletarian cultural pioneers including Lu Xun and Mao Dun, famous writers including Rou Shi, Yin Fu, Yu Dafu, Feng Xuefeng, Xia Yan, Shao Quanlin and Ai Qing have come forth.