Can you get beans?

As the saying goes: "Grow melons and melons, and grow beans and beans." Have you heard of "planting beans"? Don't be surprised, read the following and you will understand.

In the mid-19th century, malaria was prevalent in the UK, and natural quinine for malaria was not enough. The German chemist Hoffmann asked the student Bai Qin to try to extract quinine from the tar, but found a bright purple-red aniline. This kind of thing is especially good for dyes. Then the synthetic dye "Anisin Purple" was born in the hands of Bai Qin. Bai Qin applied for a patent number for this purpose and held the first synthetic dye factory in history.

In the absence of a solution to the original problem, someone with a heart can solve another problem. It seems that "the melon can sometimes get beans."

In fact, there are still many examples of "want to grow melons but get beans". In the mid-19th century, the German Henry Schward looked for the planet between Mercury and the Sun. He used the telescope to observe the Sun for five consecutive years. He never found the planet he was looking for, but he first discovered the surface of the Sun. There are sunspots. He continued to observe and record, and later discovered the activity cycle of the sunspot through analysis. This discovery earned him the gold medal awarded by the Royal Astronomical Society. This is really the hen, the duck egg, the melon got the beans.

Anyone who can get "beans" by "melon" is good at observing and analyzing. Sometimes the kind of "melon" got the "bean" because of the cover of the surface phenomenon, even if you pay attention, you can see where the "bean" is.

Friends, have you learned something? As long as you pay attention to observation, maybe one day you can also harvest a lot of round "beans" from "Guadili"!

First day: confusing