What is so special about December 4th in history?
On December 4, 2013, China's abacus application was successful.
On December 4, 1952, the world's worst "smog" event occurred in London: a continuous thick fog lasted for nearly a week, and the entire city was covered by thick fog and plunged into darkness.
During this period, more than 4,700 people died of respiratory diseases.
December 4 is there every year. Which year of today has a special meaning to you?
What unforgettable thing happened?
Do you have any friends who celebrate their birthday today?
Raise your hand in the message area,
I wish you a happy birthday, happiness and health every day!