First of all, look at Song Wu's character: he longs for chivalry, perseverance, courage and fearlessness (after killing in Zhangdu prison, he was named "the murderer of Song Wu"), he hates evil, and is just and brave (to Jiang Menshen).

Settle grievances, be kind (to Song Jiang, be kind), and don't bow to evil forces (kill Ximen Qing with anger).

Among them, being aggressive (Wang Po tried in Yanggu privately and Zhang Du was in charge) is the greatest personality characteristic of Song Wu. Song Wu's main personality characteristics are: (fearless, skilled in martial arts, hating as hatred, fighting bravely as a hero, drawing out a sword to help if he sees injustice).

Song Wu: fearless, superb in martial arts, fierce as hatred, chivalrous and awe-inspiring, he draws his sword to help when he is in trouble. Not only one person can kill a tiger, but he is also one of the best among Liangshan heroes. He is honest and upright. He advocates justice and hates evil. He has a deep understanding of corrupt regimes and corrupt officials and has no illusions. He has a rigorous life and a decent style. 6. He is not greedy for money and lustful. 7. Be considerate of the suffering of the poor. 8. He opposed Song Jiang's "woo".

To sum up, Song Wu should be the most suitable civil servant.