Guandi Temple couplets

Because it is a couplet of Guandi Temple, the protagonist must be Guan Yunchang!

Then the first part can be added as BCDF, in which pterosaurs are dinosaurs and can be excluded. Pang Long certainly won't have much to do with Guan Yu, so it can only be ruled out. Wolong is Zhu Gekongming, Prime Minister of Shu, and Zilong is Zhao Yun, Zhao Zilong of Changshan. Although Zhao Yun is not Guan Yu's sworn brother, he has always called Guan Yu by his brother. Although Zhuge Liang didn't get Guan Yu's compliment when he was young, Bo Wang Po burned Guan Yu.

The alternative answer in the second couplet is ABEF, in which Meng De is Cao Cao Mengde, and Cao Cao has a white horse's kindness to Guan Yu, who has always respected Guan Yu's loyalty and made Guan Yu ride thousands of miles alone. Similarly, Guan Yu once asked Cao Cao to attend Huarong Road, and the love between the two heroes can be described as an eternal legend. It is mentioned in the Romance that even Cao Cao's head wind disease worsened because Wu Dong gave Guan Yu's head to Cao Cao, which accelerated his death. Pound is Ma Chao's father Ma Teng's sworn brother. After Cao Cao killed Ma Teng, Ma Chao was arrogant and arrogant, which led to internal differences. Later, it was used by Cao Cao, which led to the failure of Ma Chao's revenge. Pound also defected to Cao Cao, but he was as loyal as Guan Yu. After the Western Han Dynasty, Ma Yuan fought Guan Yu to prove his loyalty to Cao Cao, but he was finally defeated, but he was also appreciated by Guan Yu and left behind. Although these two people are closely related to Guan Yu, they are not brotherhood, but more heroic affection! Wing De and Xuande are Guan Yu's sworn brothers, namely Zhang Fei, Zhang Yide, Liu Bei and Liu Xuande, which embody brotherhood, so Wing De and Xuande are the best answers!

That is, teacher Wolong, friend Zilong, and dragon teacher Longyou;

Brother Yide, Brother Xuande, Brother Dede.