The topic of “Mosquito Infestation Inside High-Speed Train from Hong Kong to Shanghai” has surged to the top of trending topics on Weibo, sparking widespread attention.
On March 31, a netizen posted revealing that there were many mosquitoes inside carriages 1 to 16 of the G386 high-speed train journey from Hong Kong to Shanghai Hongqiao.
According to the video posted by the netizen, passengers inside the carriage were seen swatting away mosquitoes with their hands.
The Jiangnan Metro News reported that the netizen said, “The train departed from West Kowloon Station in Hong Kong at 2:05 PM and arrived at Shanghai Hongqiao at 10:42 PM, and the train is still in operation.”
“The train staff reported the issue and tried to comfort passengers, but no specific measures were taken. The train staff mentioned that the previous day, the train was parked at the Chaoshan maintenance facility, leaving the windows open all night, allowing mosquitoes to fly in and hide. As the train resumed service today, once passengers boarded, the mosquitoes all flew out.” The netizen expressed their hope for a prompt resolution to the issue and requested compensation for the train ticket.
The netizen mentioned that they disembarked early, stating, “However, there were still passengers on the train, and most of them had to endure a long journey. I couldn’t tolerate the mosquitoes, so I had to purchase an additional ticket to get off.”
The report mentioned that a call was made to the customer service hotline of the Guangzhou Railway Group, which operates the G386 train. The staff member stated, “No relevant complaints have been received yet, but we will register feedback and wait for a response from the train crew.”
This incident has stirred up discussion among many mainland Chinese netizens. Weibo member and tech blogger “Ma Shang Tan,” with 498,000 followers, expressed that mosquitoes swarming on the high-speed train from Hong Kong to Shanghai indicate a mistake in maintenance causing the windows to remain open.
Weibo member “Yu Ti Lang Xing” remarked, “Spending money to ride the high-speed train should be a comfortable and convenient journey, but to encounter a ‘mosquito attack’ is unacceptable. The reason for leaving the windows open for a whole night during maintenance is indeed hard to accept, and it is even more regrettable that the staff lacked effective responses to address passengers’ distress.”
Weibo member “Zhou Shi Ju” stated, “On the G386 train from Hong Kong West Kowloon to Shanghai Hongqiao, mosquitoes were rampant in carriages 1-16, making passengers swat away mosquitoes throughout the journey, making it difficult to sit or stand comfortably. Some couldn’t bear it and had to get off early. The train crew explained that mosquitoes had entered the carriages due to leaving the windows open during maintenance the previous night. Who can endure an over 8-hour journey like that?”
Weibo user “All World Drift” commented, “The underlying cause of this incident and the high level of carbon dioxide on the high-speed train are the same. It’s hard to imagine that such expensive equipment in the train carriages lacks proper ventilation.”
Weibo influencer “Lin Bu Li” quipped, “It’s only March, and Guangdong already has so many mosquitoes… I estimate it will be another tough battle this year against diseases like malaria or dengue fever…”
In the early hours of April 1, Guangzhou Railway Group Guangzhou-Jiulong Passenger Transport Section issued a response, sidestepping the train staff’s claim about leaving the windows open during maintenance resulting in mosquitoes flying into the carriages.
According to their response: The G386 train departed from Hong Kong West Kowloon Station at 14:05 on March 31, 2026, and arrived at Shanghai Hongqiao Station at 22:42. The train had undergone routine maintenance and inspection at the Chaoshan EMU Maintenance Base in a suburban area before the start of service. Initial analysis suggests that the appearance of mosquitoes inside the carriage is related to the recent continuous rainfall and humid conditions in the Guangdong-Hong Kong area, leading to rapid mosquito breeding.