Which is better, Mao Guodian's calligraphy or Liu Jianfei's?

Hello, Liu Jianfei. According to the information about calligraphy, Mao Guodian's calligraphy is better than Liu Jianfei's in Liu Jianfei. Liu Jianfei's calligraphy works have been invited to participate in many national exhibitions held in China Military Museum, Diaoyutai State Guesthouse, China National Museum and China Art Museum. Mao Guodian is a national first-class artist, and his calligraphy is not as good as Liu Jianfei's.