Dozens of Officials Probed in Kindergarten Lead-Poisoning Scandal
Listen to the full version

An investigation into the lead poisoning of more than 240 children at a kindergarten in Northwest China’s Gansu province has found that the kindergarten’s director and its investor caused the poisoning by adding coloring to the food to make it look more appealing to students’ parents.
The coloring contained dangerous amounts of lead and at least some were clearly marked as being unsafe for consumption, according to the findings released Sunday. It’s not clear whether the pair knew the pigments were tainted, but the probe found the director also regularly ate the colored food.

Unlock exclusive discounts with a Caixin group subscription — ideal for teams and organizations.
Subscribe to both Caixin Global and The Wall Street Journal — for the price of one.
- DIGEST HUB
- Over 240 children and 28 staff at a Gansu kindergarten suffered lead poisoning after its director and investor added industrial pigments to food for visual appeal.
- Police arrested six individuals; 17 officials face investigation for corruption or dereliction, after health institutions falsified blood tests and obstructed the probe.
- The government has provided free medical care, apologized publicly, and vowed zero tolerance with stronger food-safety oversight.
An investigation into the mass lead poisoning at a kindergarten in Gansu province, Northwest China, has found that over 240 children were poisoned after the kindergarten’s director and investor deliberately added industrial pigments to food to make it look visually appealing for prospective students’ parents. The pigments used contained dangerously high levels of lead, with packaging that clearly labeled them as inedible. Despite uncertainty around whether the perpetrators were fully aware of the dangers, evidence shows the director herself had elevated lead levels, indicating she regularly consumed the tainted food as well. This scandal has led to disciplinary actions against officials who falsified medical test results and mishandled the crisis, as well as vows from provincial authorities to ensure stricter food-safety supervision moving forward. [para. 1][para. 2][para. 3]
The incident was uncovered when 247 of 251 students and 28 of 34 employees were found to have elevated blood lead levels. Immediate medical treatment was provided, and as of the report date, almost all hospitalized children had been discharged after initial treatment. The provincial government has established a special fund to cover all medical expenses and provide nutritional supplements for the affected children. In a statement, Gansu authorities expressed deep remorse and pledged zero-tolerance for wrongdoing as well as system-wide improvements in food-safety monitoring. [para. 4][para. 5][para. 6]
The probe revealed the poisoning was orchestrated by Zhu Moulin, the kindergarten director, and investor Li Moufang. Zhu had instructed the cook to purchase industrial-grade colored pigments online for 6.12 yuan ($0.85) per 100 grams from April 2024 onwards, opting for more vibrant but unsafe colors over cheaper, natural food dyes previously used. Despite explicit labeling that these pigments were “not for consumption,” staff still used them in meals, on average, six times per month from May onwards. The yellow pigment contained alarmingly high levels of lead—209.9 grams per kilogram—while food samples showed lead concentrations up to 1,340 mg/kg, grossly exceeding China’s safety standard of 0.5 micrograms per kilogram. The kindergarten shared photos and videos of brightly colored food to parent chat groups online in an effort to impress and attract new enrolments. Zhu, who also consumed the food, was found to have a blood lead level of 169.3 micrograms per liter. Police have detained six individuals in connection with producing and distributing harmful food. Investigators definitively traced the lead source to the kindergarten kitchen, ruling out any external sources such as previous environmental pollution or nearby industrial sites. [para. 7][para. 8][para. 9][para. 10][para. 11][para. 12]
Beyond the poisoning itself, the scandal exposed grave malpractice and obstruction among local health institutions. The Tianshui No. 2 People’s Hospital was found to have deliberately falsified test results by lowering high blood lead readings and failed to report clusters of poisoned children. On a higher level, the provincial Center for Disease Control and Prevention mishandled blood samples, which resulted in significant underreporting of lead levels and later attempted to evade accountability. Seventeen officials, including the heads of health, education, and market-supervision bureaus, are under formal investigation for corruption and dereliction of duty, with another ten senior local officials being disciplined. The probe further revealed that the kindergarten was operating without an official license, which local authorities had overlooked, and that officials had received bribes from the investor. [para. 13][para. 14][para. 15][para. 16][para. 17][para. 18]
- Early 2024:
- Kindergarten director Zhu Moulin instructed a cook to buy industrial pigments to color food in an effort to attract parents and boost enrollment.
- April 2024:
- Kindergarten’s chef started purchasing industrial-grade yellow, red, and green pigments online.
- May 2024:
- Kitchen staff began adding industrial pigments to meals served to children and employees, approximately six times a month.
- May 2025 to June 2025:
- Tianshui No. 2 People’s Hospital deliberately altered at least two high blood lead test results for children from the kindergarten.
- A week Before Sunday, 2025:
- Gansu's provincial government escalated the investigation, appointing Hu Changsheng and Ren Zhenhe to oversee the probe.
- By Sunday, 2025:
- Findings of the provincial-level investigation into the lead poisoning incident were released.
- As of Sunday, 2025:
- 234 of the 235 hospitalized children had completed an initial course of treatment and were discharged.
- PODCAST
- MOST POPULAR