In the men's weightlifting 6 1 kg final just held in Tokyo International Forum Building, Li Fabin broke the Olympic record with a score of 3 13 kg and won the fifth gold medal for the China delegation!

Ordinal numbers are numbers that describe the position in a column. Ordinal numbers are related to order. For example, second place, fifth gold medal and so on.

Also, we often use the quality unit "kg" in our life, also called "kg", and the symbol is kg. Formula expression:1kg =1kg =1kg.

Screenshot of official website of Tokyo Olympic Games

What shape is the emblem in your eyes?

Is it like a circle surrounded by different figures? The outer circle is round.

Take a closer look.

In fact, the emblem consists of 45 quadrangles with different shapes and sizes. Every quadrilateral is the most common rectangle!

Ingenious designers use the optical illusion to create the illusion of "directly turning into music".

Similarly, using optical illusion to shape the impossible graphics in the three-dimensional world, there is the classic Penrose ladder. A ladder that always goes up and down but never stops circulating.