During the Qing Dynasty, Yu Chenglong, the governor of Liangjiang, who was called "the first corrupt official in the world" by Emperor Kangxi, was not only famous for his integrity, but also famous for his witty handling of cases.

At that time, Jiangnan was in a peaceful and prosperous era, and the music industry was also very prosperous at that time. Shortly after Yu Jackie Chan took office as governor of the two rivers, there was a murder at the famous "Yazenfang" in Hangzhou. Yazenfang is one of the four major music workshops in Hangzhou. Its owner, Liu Wenhong, has the best kite-playing skills in Jiangnan. Every time he plays on the Yazenfang stage, he always attracts officials and dignitaries from Hangzhou to come and cheer. But unexpectedly, after the Mid-Autumn Festival night performance, he was smashed in the head, drowned in the lotus pond, and a precious jade Zheng was stolen from his family.

As soon as the murder case alerted Hangzhou City, Yu Chenglong brought the yamen to Yazenfang to investigate the case, first looking for many maids and disciples in the workshop to investigate. Liu Wenhong's wife Wang was crying in the mourning hall, and Liu Wenhong had accepted several disciples before his death, and they were all dressed in hemp and filial piety in the mourning hall. After the investigation, that night, the maids were in the lobby entertaining the guests who came to enjoy the fun, and they had not been to the back garden, so the clue was broken.

Yu Chenglong then came to the mourning hall, first to Liu Wenhong's coffin three times, and then asked Wang Shi compassionately: "Madam, by the way, I still have a few doubts about this case, I hope you can answer them for me." Wang Shi then invited Yu Chenglong to the inner room. She had a low eyebrow and was in her thirties, and her appearance was ordinary. While pouring tea for Yu Chenglong, she said: "Governor, I also hope Mingcha, my official died inexplicably!" Yu Chenglong said loudly: "I would like to ask Madam, did Liu Le Shi have any enemies during his lifetime? Did he have a dispute with someone recently? Have you found that jade zheng?" Wang shi paused, then suddenly knelt down and said, "My lord, my official was open-minded and had no grudges with others. That jade zheng was passed down by my ancestors and was worth ten thousand gold... Before the Mid-Autumn Festival, my official once whipped my little disciple for not being able to practice the zheng. Maybe it was the little disciple who took revenge on the official in anger..."

Hearing this, Yu Chenglong was immediately alert: "Which little disciple?" Wang Shi cried and bowed: "It is the youngest disciple Zhang Yilun that my officials have accepted. He has always been stubborn, but my officials thought that he was talented and intelligent, so he left him... Even this time, he didn't come to the funeral hall, and he didn't want to wear hemp and filial piety for his master!" Hearing this, Yu Chenglong shouted: "Come, arrest Zhang Yilun immediately!" Just as he finished speaking, a man dressed in a white cloth suddenly rushed in and knelt on the ground: "Lord Governor, little junior brother Zhang Yilun has committed suicide by hanging a beam in his room!"

It turned out that it was Li Fu, Liu Wenhong's eldest disciple, who broke in. He blamed Zhang Yilun's future mourning hall and was about to urge him, but unexpectedly found him committing suicide in the room. Under the leadership of Li Fu, Yu Chenglong and his people came to Zhang Yilun's room. Sure enough, he was hanging from the beam and died. Seeing this, Yu Chenglong ordered his subordinates to search the room. He went to the window, saw a chessboard on the desk, and quietly wrote down the layout of the chessboard.

At this moment, his subordinates found the jade zheng under Zhang Yilun's bed and wrapped it in white steps. When Wang Shi saw the jade zheng, she immediately cried and fell to the ground, crying and bowing: "Official, you died miserably. Fortunately, the governor came to investigate the case, the bad disciple Zhang Yilun committed suicide, and the jade zheng is intact. You can go to the ground for peace."

Yu Chenglong glanced at Li Fu, who was standing at the side with his eyes, and saw that his face was full of sadness, and he was standing by the desk, with one hand on the edge of the desk, and his fingers kept knocking back and forth. Although this action was very small, Yu Chenglong's face changed greatly when he saw it, and he coughed and said, "Even if this case is closed, the murderer Zhang Yilun has committed suicide in fear of crime, and the jade zheng will be brought back to the official office as evidence to close the case for the time being. This official's priority is to ask to leave first. On the day Liu Le Shi is buried, this official will come to pay homage and return the jade zheng at the same time!" After saying that, Yu Chenglong left Yazenfang with the yamen.

As soon as he returned to the official residence, the master couldn't help but ask, "My lord, the villain doesn't understand, this case has a lot of doubts, why are you closing the case in a hurry?" Yu Chenglong laughed: "Don't ask so much, you go get the Go, and I'll tell you why?" The master was puzzled, but he still brought the chessboard and chess pieces, only to see that Jackie Chan played a piece on the chessboard, and then said, "Master, look at this chess game, what is your judgment?" The master said strangely: "My lord, this is a chess game, what does it have to do with this case? I look at this chess game, Bai Zi is rising up, and the black chess is resisting properly. At a time when it is difficult to distinguish, the victory or defeat may be between one step!" After listening, Yu Jackie Chan put down the chess piece and said, "Master is right, may I ask if someone who is so engrossed in playing the game will suddenly commit suicide in fear of sin?" Master immediately understood a little when he heard it, and said, "It turns out that this chess game is on the chessboard in Zhang Yilun's room... In my opinion, this endgame is extremely intense. If you are playing, you must go all out, and you will not dare to slack off. Naturally, it is easy to be killed!" Yu Chenglong nodded and said, "Zhang Yilun died too hastily. This chess game further confirms my guess. I suspect that he was framed, and Yuzheng was also placed under his bed.

Seven days later was the day of Liu Wenhong's burial. The hall of Yazenfang was surrounded by white cloth, and many servants and disciples cried. Many dignitaries in Hangzhou who were friends with Liu Wenhong came to pay their respects. Wang Shi, supported by a few maids, welcomed the guests, looking haggard and tearstained. The funeral team drove to Nanshan outside the city in a mighty manner. When they were about to be buried, they only heard a gong sound on the avenue. A fast horse arrived, and a yamen dismounted and handed it over: "Madam Wang, the governor has come to pay homage with Yuzheng!" Sure enough, a team behind was Yu Jackie Chan's sedan chair, and a group of people carried a wooden shelf wrapped in black cloth.

Yu Chenglong stepped down from the sedan chair and ordered his subordinates to put the wooden shelf in front of Liu Wenhong's coffin, and the jade zheng was placed on the shelf, attracting everyone's attention. Yu Chenglong bowed three times to the coffin and said with his hands: "Liu Le Shi, this officer has solved the case for you, and the murderer has also been arrested. If you know about it underground, I hope you can walk all the way to Huangquan Road!" But unexpectedly, as soon as Yu Chenglong raised his head, the few strings of the jade zheng began to be plucked up and down, and a tune sounded, and the funeral people were shocked, and they retreated a few steps like seeing ghosts and gods.

Yu Chenglong continued to bow to the coffin and said, "Musician Liu, why is this guzheng playing alone? Could it be that you are not at peace with your eyes? If you have any grievances, you may wish to appeal to this official!" At this time, the guzheng's music became faster and faster, like a song like a cry, full of grief, and everyone present turned their attention to the stunned Wang shi after listening to the tune. It turned out that the guzheng was playing the folk tune "Evil Wife Kills Husband" that everyone had heard. Seeing the horror on Wang shi's face, Yu Chenglong suddenly patted the coffin hard and shouted, "Wang shi, the gods reappeared today and helped me solve the case. Did you murder your husband?" When Wang shi heard the sad guzheng's voice, her expression was extremely terrified, and she immediately knelt down on the ground and said, "Official, I hurt you and made you die in peace..." At this moment, Yu Chenglong saw that Li Fu was about to squeeze out of the crowd, and he immediately called the yamen to arrest Li Fu in one fell swoop, and Li Fu shouted, "My lord, what's my crime? Why did you detain me?"

Yu Chenglong sneered and said, "Li Fu, you colluded with the master and framed the master, what should the crime be?Li Fu was still stubborn and defended: "My lord, I was wronged..." Yu Chenglong cupped his hands and said to everyone, "I wronged you? Let me ask you, that day in Zhang Yilun's room, when he committed suicide and was convicted, what were your fingers knocking on the table?Li Fu looked at Yu Chenglong in horror, and Yu Chenglong pointed to Guzheng: "I am also a person who is proficient in music and rhythm. That day, I already suspected that you were the murderer. At that time, your master was dead, and your junior brother was confessed. Your fingers involuntarily typed out the tune of 'andarin ducks playing in the water 'on the desk. How could you still type such a tune when you were wearing hemp and Dai Xiao? So later, I specially sent someone to follow you, but I didn't expect to find out that you had a short tryst with Wang shi... I have already investigated, you were not in the mourning hall when Zhang Yilun was killed, everyone knows that you are excellent at chess, someone saw you playing against Zhang Yilun, did you take the opportunity to murder him to replace the crime? "

Hearing this, Li Fu immediately collapsed on the ground in fright. What he did not expect was that he got carried away with his fingers and typed out such a tune, and he did not expect that the guzheng would suddenly appear when he was buried. Wang also fell to the ground and recruited everything: it turned out that she and her eldest disciple Li Fu had a tryst in the back garden on the night of the Mid-Autumn Festival, and were discovered by Liu Wenhong. The two killed Liu Wenhong and took his property, and discussed shirking the crime to the younger disciple Zhang Yilun. Li Fu knew that Zhang Yilun was obsessed with Go, so on the day Yu Chenglong came to investigate, he found Zhang Yilun to play, strangled him with a rope while he was thinking with all his strength, and then hung on the beam to create an illusion, hiding the jade zheng in Zhang Yilun's room...

At this moment, Yu Chenglong clapped his hands, and the voice of the jade zheng suddenly stopped. A young girl came out from the shelf shrouded in black cloth with a zheng in her arms. It turned out that the "evil wife killing husband" that appeared by the god was played by the musician invited by Yu Chenglong hiding under the shelf, and the string of the jade zheng was pulled by a yamen standing behind with a filament...