Xiao Mei, Xiao Feng, Di Renjie

Di Renjie knew that Xiao Mei was a spy. In the play, Di Renjie identified Xiao Mei's identity through his own deduction, and Xiao Mei had been following Di Renjie to help him solve the case. In addition, there was a plot that mentioned that Xiao Qingfang sent Xiao Mei to Di Renjie's side as a spy, which also showed that Di Renjie knew Xiao Mei's true identity. Therefore, it could be concluded that Di Renjie knew that Xiao Mei was a spy.

Mei Zi and Xiao Feng were a married couple. They walked into the happy marriage hall on January 14th, 2023. Xiao Feng's family was full of expectations for this day. Their satisfaction and expectations for Mei Zi were reflected in the wedding ceremony. Meizi's father also expressed his blessings for their happiness. However, there were rumors online that Xiao Feng regretted dating Meizi, but the authenticity of these rumors had not been confirmed. Mei Zi and Xiao Feng helped their parents work on the farm. Their lives seemed happy and harmonious. In general, Mei Zi and Xiao Feng were a married couple who lived on a farm. Their story was full of joy and happiness.

Xiao Mei was a character in the second part of the TV series " Detective Di Renjie." She was one of the six snake heads of the snake spirit. She was the twin sister of Xiao Feng, and the two of them were called " Blood Spirit." She was a spy of the Snake Spirit Organization. She had deceived Ruyan and Yuanfang and played Di Renjie. Xiao Mei was eventually killed by Di Ruyan, and her sister, Xiao Feng, was arrested.

In the TV series Detective Di Renjie 3, Xiao Tao's true identity was the last Black Man King of the Black Man Society. She was the identity that the Black Clothes Heavenly King had used after instructing the Black Clothes Society to kill the real villager, Xiao Tao. Xiao Tao had planned everything, and then made up the illusion that she had met Di Renjie in a coincidental incident. Later, she had followed Di Renjie as a spy and acted innocent and cute, and was even taken in as a disciple by Di Renjie. In the end, she committed suicide by taking poison. Her character was Yuan Ran.

Xiao Mei and Xiao Feng were both blood spirits. Xiao Mei and Xiao Feng were twin sisters, and the two of them were collectively known as "Xue Ling". They were one of the most mysterious assassins among the snake spirits. In the TV series Detective Di Renjie 2, Xiao Mei was played by actress Shu Yan. Therefore, Xiao Mei and Xiao Feng were both blood spirits.

Xiao Mei and Xiao Feng were both blood spirits. They were a pair of twin sisters, known as the Blood Spirits. They were the most mysterious killers among the Snake Spirits. Xiao Mei was played by actress Shu Yan in Detective Di Renjie 2. In the end, Xiao Mei was killed by Di Ruyan and Xiao Feng was arrested by the court. Therefore, Xiao Mei and Xiao Feng were both blood spirits.

Xiao Tao was a character in the TV series Detective Di Renjie 3, played by Yuan Ran. Her real identity was the last Black Clothed Heavenly King of the Black Clothed Society. Xiao Tao was not her real name, but the identity that the Black Clothes Heavenly King used after instructing the Black Clothes Society to kill the real villager Xiao Tao. She designed a series of plans and met Di Renjie in a coincidental incident. Later, she followed him as a spy and showed an innocent and cute appearance. In the end, she was accepted as a disciple by Di Renjie. However, in the end, her identity was exposed and she committed suicide with the black-clothed Heavenly King.

There was very limited information about Xiao Qing in Detective Di Renjie 3. The search results did not mention Xiao Qing's specific plot or character description in Detective Di Renjie 3. Therefore, based on the information provided, I am unable to answer the question about Xiao Qing in Detective Di Renjie 3.

Di Renjie shot an arrow at Xiao Qingfang. At a critical moment in Detective Di Renjie, Di Renjie shot Xiao Qingfang with a bow and arrow. This arrow broke the stalemate. It saved Ruyan and also freed Li Yuanfang who was held hostage by Xiao Qingfang. Xiao Qingfang was assassinated by Hui Wenzhong while escaping.

The specific plot of Xiao Tao being exposed in Detective Di Renjie III was not mentioned. Therefore, he could not know the details of Xiao Tao's exposure.