Please ask someone who knows calligraphy to evaluate this word. Be professional. Thank you.

Guardian's works auctioned in the spring of 2006 cost 203,500 yuan. Specification: 17 1.8×44.2cm?

. Inscription without Yu Youren refers to Zheng Manqing, (190 1- 1975), a famous Yue national, full of beards, from Yujingshan and Yongjia, Zhejiang. In his early years, he studied poetry under Qian Mingshan, and successively served as a professor at National Beiping Art Institute, Peking University, Fudan University and Xinhua Art Institute. He lived in America in his later years and died in Taipei. Good painting, vigorous brushwork, means transcendence. He is good at calligraphy, poetry, medical skills and boxing, so he has the reputation of "five musts".