Wu is short and rude. When I was young, my mouth was frostbitten, so I couldn't speak clearly. I often stutter and have been nicknamed "Wu". He looks stupid, but his heart is cunning. When he became the backbone of Feng's department and mastered the military power, he used the means of "those who follow me prosper and those who oppose me die". When he was the overseer in Heilongjiang, he placed cronies in various places, such as "the two brothers of the Shi family, the third son of the Dong family, the five tigers of the Zhao family and the nephew of the Liu family", all of which were under his command, and Wu could order them around. Consciously unable to preside over the provincial government, he pushed the government affairs to the acting governor of Education Minister Yu Xing. In the direct war, he used most of the financial resources in the province to pay huge military expenses, regardless of harming the people's interests, and ordered Heilongjiang Guangxin Company to issue more paper money, which caused the local currency to depreciate and greatly affected the local economy.

In order to maintain the warlord's rule in the northeast, Wu brutally suppressed the people's resistance struggle throughout the country and stopped and killed all events that affected the situation. In the winter of the 11th year of the Republic of China (1922), two companies of soldiers stationed in Hailar Huncheng 2nd Brigade Infantry Regiment were dissatisfied with the commander's deduction of military pay, so they left the army with weapons, claiming that "it is better to be hooligans than to be soldiers." Hearing this, Wu immediately went to Hailar, recalled the people who left the team, coaxed them, and promised to reissue the arrears and punish the relevant personnel. He also said: "It is very hard to stay at the border. You should immediately change your defense and go back to the provincial capital to rest. " The soldiers who left the team listened to his words, and they got on the bus with him and came back happily. On the way to Five Blessingg station, Wu Tu ordered to stop and ordered two company soldiers to get off with their bare hands and wait for his lecture. When the soldiers got out of the car and were waiting in line, they were attacked by ambushing people in the car. The soldiers knew that they had been cheated by Wu, but they all escaped, and only a few survived. All those who heard it resented Wu Zhi's treachery and cruelty. In the 12th year of the Republic of China (1923), Wu arrested hundreds of bandits. Later, Wu pretended to have a meeting and tricked the gang leader into the military office on the grounds that the gang leader was fighting for power and profit and the gang was misbehaving. As they were told not to carry weapons, they all went in unarmed, tied up as soon as they sat down, and then all of them were shot. At the same time, troops were sent to surround the gangsters stationed in Nandaying and killed them with machine guns. In the 17th year of the Republic of China (1928), farmers in Tonghua, Linjiang and other counties organized broadsword meetings. Wu mobilized the army to organize encirclement and suppression. In the attack, Zhang Shusheng and Yin, the leaders of the Broadsword Club, were lured to death, and more than 3,500 members of the Broadsword Club and farmers were killed (not even 12 children escaped). However, he was respectful to the Japanese and spared no effort to promote "Sino-Japanese goodwill." He strictly ordered the military and police not to be rude to the Japanese and to try their best to protect their lives and property. In the Republic of China 17 (1928), a Japanese arms dealer was killed, and a reward of 15000 yuan was offered to catch the murderer. It should also be said that if he is caught by soldiers, he will be promoted and upgraded. Usually, when a Japanese visits, no matter who the visitor is, he will hold a banquet and invite his family to accompany him to show his sincerity in exchange for the Japanese's affection for him. Zhang's military failure in Shanhaiguan prompted Wu, who had just suppressed the return of broadsword, to help him. Originally, it was planned that Wu, who is known as the "Fu Jiang", led the troops of Kyrgyzstan and Montenegro who had just entered the customs to dispatch troops in Dezhou, but Zhang Zongchang withdrew from Jinan and was defeated. Zhang, hearing the news, held an important meeting, attended by Wu. Zhang had to change his plan and appoint Wu as the commander-in-chief of the home front in the three northeastern provinces. Zhang decided to retreat to the Commissioner's office under the pretext of armistice. On May 2, Wu returned with Zhang's family. Wu is setting up a rear headquarters to rest and serve the army.

Wu took advantage of his authority to purchase more than 270,000 pieces of land and several properties in Zhengjiatun, Tongliao, Taonan and Qiqihar, and rented out more than 1 10,000 houses. There are large-scale houses and temples in Fengtian and Zhengjiatun, and villas have also been bought in Dalian. His sole proprietorships and joint ventures include grocery stores, money houses, cookers, granaries, cinemas and electric light factories. There are huge deposits in the bank and a lot of jewels are kept. He proudly said that he would not let Zhang become the richest man in Northeast China.