Chen Jingrun is a famous Chinese mathematician. The publication of "Expressing an even number as the sum of the product of a prime number and a number not exceeding two prime numbers" became a milestone in the study of Goldbach's conjecture. To commemorate his contributions, the Purple Mountain Observatory named a planet "Chen Jingrun Star".

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The price of bitcoin broke through $110,000 and hit another all-time highhead

Trump "ambushed" the South African president at the White House and was accused of being a die-hard fan "performance"

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A bridge collapsed in Yuyao, Zhejiang, and the local transportation bureau: it is a village road, and the truck has been towed away, causing no casualties