Liu Zongyuan
Liu Zongyuan wrote "Fei Guoyu" (T: 非國語, S: 非国语, "Argument against the Harangues of the Various States"), a criticism of "Guoyu". In response, Liu Zhang (, circa 1095–1177); Jiang Duanli (T: 江端禮, S: 江端礼); and Yu Pan (虞 槃 fl. 1300), Yu Ji's (, 1272–1348) younger brother, wrote texts titled "Fei Fei Guoyu" T: 非非國語, S: 非非国语; "Argument against the Argument against the Harangues of the Various States") in opposition to Liu Zongyuan's essay.