At least 11 American diplomats stationed in China, including nine from consulates in Guangzhou and Shanghai and two from its embassy in Beijing, have left the country for urgent medical tests and treatment in recent months.
They appear to be the latest victims of severe headaches and tinnitus suffered by members of the US diplomatic mission in China.
“Sonic attacks” were first reported in the southern Chinese city of Guangzhou in April, after a number of consular employees developed symptoms similar to those which affected colleagues at the US embassy in Havana in 2016. Diplomats in the Cuban capital suffered dizziness, insomnia and even partial hearing loss in 2016 after being subjected to frequent, strange sounds.
US diplomats in Guangzhou reportedly heard subtle but persistent sounds not only inside the consulate compound but also in their apartments at Canton Place, an upscale residential complex in downtown Guangzhou popular among diplomats and overseas businessmen.

- Pedestrians walk past the US consulate in Guangzhou. Photo: Handout
Chinese Foreign Ministry spokesperson Lu Kang noted on Monday that their own investigators had found nothing suspicious, and called on the US to share any information they had.
Chinese papers on Tuesday also reported that Washington was pulling out diplomats from China, suggesting that this could be a tactic by the Trump administration to exert pressure on Beijing amid deteriorating relations due to trade and tariff disputes.
Last month Bloomberg cited one US diplomat as saying that he experienced some “strange” noises, sensations and pressures while on duty in Singapore to prepare for the summit between Donald Trump and North Korean leader Kim Jong-un.
As well as US diplomats in China and Cuba, consular staff in Singapore and Uzbekistan have also reported suspected “sonic attacks”.
Those evacuated from China are now under observation at the Center for Brain Injury and Repair at the University of Pennsylvania, where diplomats recalled from Havana were treated two years ago.
The US State Department has said that so far only one employee from Guangzhou had been diagnosed with minor concussion, adding that others were evacuated for other reasons.
Experts say health damage from ultra-low and ultra-high frequency sound waves decreases drastically with the increase in distance between the source and the victim. This means that, in order to be able to cause lasting health damage, the source of such sonic attacks would need to be comparable in size to an office block.
The New York Times reported last week that the sounds and sensations experienced in Cuba and China had been speculatively attributed to either sophisticated electronic eavesdropping efforts or a form of aural harassment. Some critics point the finger at Russia or China, while other experts raise the possibility of environmental factors or even mass hysteria.
Read: Enigma shrouding ‘sonic attack’ on US diplomat in Guangzhou

Chinese in Canada and USA are one of the most criminal elements that let go for free. Because of that Canada and USA are now the horror country where people are torchred in a sinster way, where identity theft is common and where people are dying due to drug overdose, I came a from a poor country many years back where moral value is way bigger than material possession. Sadly, witnessing all these crimes by the most incompetent people is saddling!
Worse to that, as if what they are doing is not enough, they hide their crimes very well and blamed another innocent citizens.They blend in well and hard to isolate these criminals from the rest of citizens.They masked their face with a make-up and a designer outfit, They look morally responsible citizens. Above all they know well how to lie and deceive others.Sadly, they are terrible and moral less creatures!
I knew well about Chinese crime ring because am a victim myself. It all happened after my identity theft by Chinese couples in Calgary, Alberta. After carefully studied their crime ring, I wrote a 4-page letter to RCMP and exposing this crime. Unfortunately, RCMP did not help me.
For the last 7 years, I am constantly harassed by their Chinese young and old spies. They followed me on foot and cars 24/7. They have destroyed my personal and professional life to the level that I could not find a job.
I am not sad about Chinese but am angry at them. I am not revenge at all because revenge is not for good citizen. I rather write and talk about their untold crime until my last day. I want you to do the same until they are fully exposed! Until then rest assured, I am not sleeping!
Chinese in Canada and USA are one of the most criminal elements that let go for free. Because of that Canada and USA are now the horror country where people are torchred in a sinster way, where identity theft is common and where people are dying due to drug overdose, I came a from a poor country many years back where moral value is way bigger than material possession. Sadly, witnessing all these crimes by the most incompetent people is saddling!
Worse to that, as if what they are doing is not enough, they hide their crimes very well and blamed another innocent citizens.They blend in well and hard to isolate these criminals from the rest of citizens.They masked their face with a make-up and a designer outfit, They look morally responsible citizens. Above all they know well how to lie and deceive others.Sadly, they are terrible and moral less creatures!
I knew well about Chinese crime ring because am a victim myself. It all happened after my identity theft by Chinese couples in Calgary, Alberta. After carefully studied their crime ring, I wrote a 4-page letter to RCMP and exposing this crime. Unfortunately, RCMP did not help me.
For the last 7 years, I am constantly harassed by their Chinese young and old spies. They followed me on foot and cars 24/7. They have destroyed my personal and professional life to the level that I could not find a job.
I am not sad about Chinese but am angry at them. I am not revenge at all because revenge is not for good citizen. I rather write and talk about their untold crime until my last day. I want you to do the same until they are fully exposed! Until then rest assured, I am not sleeping!