The only city in China where you can see a doctor for free is Sansha in Hainan Province. There, medical care, utilities, schooling, and movies are all free, and housing is only a symbolic dollar. Sansha is also the only city in China that does not allow foreigners to enter.
When the hail fell, some netizens photographed a group of geese motionless, looking up at the sky at 45 degrees, forming a strange scene. This is because the goose will have a smaller collision area when it lifts its head, and it is not easy to be hit by hail.
Once the MRI machine is turned on, it cannot be turned off unless there is an accident. That's because millions are lost every time you turn off your device, and you have to wait for days on end before you can use it properly.
The Queen's shoes were worn by someone else. Because new shoes are easy to wear on their feet, they will find someone the size of the queen's feet beforehand, let them walk around in the shoes, and wait for the shoes to become soft and fit before the queen can wear them.
The world's longest TV series is "Guiding Light" in the United States, with a total of 18,262 episodes, which took 72 years to complete.
The most expensive painting in the world is Leonardo da Vinci's Salvator Mundi, which ended up with 4$50.3 billion sold.
Why isn't the USB port designed to be plugged in both front and back? Ajay Ibart, the co-inventor of USB, abandoned this convenient design in order to save costs, which he now regrets.