Cao Chong called it an elephant sent by Sun Quan when Cao Cong was five or six years old. Cao Cao wants to know how heavy the elephant is. So I asked his subordinates if there was any way to weigh this portrait. Cao Chong said, let's put the photos on the boat, then carve a scale at the place where the boat overflowed, then put things on the boat, put them on the same scale, and then weigh them again, and then we will know the weight of the elephant.

Archimedes' crown is the king's suspicion that the goldsmith didn't use up all the gold in the crown, so he doubted whether the goldsmith weighed some of the silver in the crown, so the king was very suspicious, but he weighed the golden crown, although it weighed as much as the gold given to the goldsmith, so it was impossible to know. When Archimedes was taking a bath, he found that the volume of water overflowing from the basin was the same as the volume of water that people went in. In this case, if the golden crown is submerged in water, the volume of the golden crown can be known according to the spilled water.

There is no difference between Chinese and western thinking. If we have to compare, Cao Chong was only five or six years old when Cao Chong was an elephant, and then Archimedes seemed to be almost 30 years old at that time. Compared with a 30-year-old uncle, a child of five or six years old is really the best way Cao Chong can think of.

Another difference is that when Archimedes took a bath, it was full of water, but if Cao Chong took a bath as a child, the water wouldn't overflow, so even if Cao Chong was clever, there was no difference between Chinese and Western thinking. Cao Cao couldn't be inspired by this and thought of such a way, because Cao Chong called it an elephant and Archimedes called it a crown.