Jian Mingzhi and Yang Guirong, farmers from Jiantun Village, Zheng'an Town, Beizhen City, Liaoning Province, have been using non-food additives to produce bean sprouts for a long time and selling them in Shenyang since 2008, which triggered the sensational "Shenyang tainted bean sprouts incident". Shenyang Heping District Court on December 2, 2011, Jian Mingzhi, Yang Guirong guilty of production, sales of toxic and harmful food, sentenced to four years in prison and three years in the first instance, the other three defendants in the same case were also sentenced.

The Heping District Court found that four of the five defendants in the case were from the rural areas of Beizhen, and that Zhang Xianjun, who was responsible for providing the toxic and harmful additives, was from the village of Houkang, Xinglong Town, Liaoyang County. Since August 2008, Jian Mingzhi, Yang Guirong in Shenyang City, Heping District, Hunhe Station Township, after the Sai village rented a private house, the use of non-food additives to produce bean sprouts and sales. 2010 June was exposed by the local media, the husband and wife duo to hide for a period of time, and then rented the Heping District, Hunhe Station Township, the village of the lower bay of a bungalow, employing fellow townspeople, Min Guocheng, Jian Ming will continue to use the human body poisonous, harmful to the plant growth regulators and Preservatives and other additives to produce bean sprouts, and bean sprouts sold to the Shenyang city south five vegetable wholesale market and other places, from which profit.

In addition, Zhang Xianjun from the beginning of 2009 to the crime, in the knowledge that Jian Mingzhi and others used for the production of bean sprouts, but still paid to provide all kinds of toxic and harmful to the human body of plant regulators, preservatives and other additives.

The court held that the defendants Jian Mingzhi, Yang Guirong, Zhang Xianjun, Min Guocheng, Jian Minghui ganged up in the production and sale of food adulterated with poisonous and harmful non-food raw materials, have constituted the production and sale of poisonous and harmful food crimes, of which Jian Mingzhi, Yang Guirong, Zhang Xianjun in the *** with the crime played a major role in the main role of the principal offender, Min Guocheng, Jian Minghui in *** with the crime played an auxiliary role. Min Guocheng and Jian Minghui played an auxiliary role in the *** same crime, were accomplices, and were liable to a lighter penalty. For this reason, Jian Mingzhi was sentenced to 4 years of imprisonment and a fine of 300,000 yuan; Yang Guirong was sentenced to 3 years of imprisonment and a fine of 200,000 yuan; Zhang Xianjun was sentenced to 3 years of imprisonment and a fine of 200,000 yuan; Min Guocheng was sentenced to 1 year of imprisonment and a fine of 30,000 yuan; Jian Minghui was sentenced to 6 months of imprisonment and a fine of 20,000 yuan.