On May 13, a passenger aboard Shenzhen Airlines flight ZH9804 from Wuxi to Shenzhen reported an anomaly on the wing of their Boeing 737, prompting immediate action from the airline. The passenger noticed what appeared to be a defect involving a flap or slat on the aircraft's wing and alerted the cabin crew before boarding. The chief flight attendant took the matter seriously, bringing the concern to the cockpit for further verification by the captain. Following the investigation, Shenzhen Airlines decided to ground the aircraft and cancel all subsequent operations associated with it. The incident highlights the airline's commitment to safety, as they proactively addressed the passenger's report. Later that evening, the airline reached out to the passenger to discuss the incident, indicating their serious approach to the safety concern raised. The viral video of the incident has since circulated online, although its authenticity remains unverified.