Seven-color light

   How many colors should happiness have? I can't say.

  That might confuse you. If you don't know, why did you say there were seven colors? In culture, the number seven is a bit peculiar.

  Europeans have always been particularly fond of the number seven. The earliest origins can be traced back to the ancient Greeks, and many coincidences are related to seven. The Greeks believed that nature was composed of four elements: water, fire, wind, and earth, and that the basic unit of society was the family. A complete family is divided into three parts: father, mother, and child. Adding this up again, counting the world composed of nature and society, there are seven basic elements. The ancient Greeks loved addition, believing that the basic shapes of the world were squares, triangles, and perfect circles; the Pythagorean school was a staunch supporter of this view. If you painstakingly add up the number of angles in these shapes, it also equals seven.

  As Tolstoy said, happy families are all alike; every unhappy family is unhappy in its own way. Having worked as a psychologist for many years, I believe that unhappy families are all alike, but happy families are each happy in their own way.

  You might say, "Isn't this just deliberately arguing with Tolstoy?" I haven't stooped to that level of making trouble out of nothing. Think about it: only sweet flavors can be savored repeatedly, allowing for the addition of more delicious elements and making your taste buds dance with joy. Like coconut flakes, cocoa, cream… the rich layers make life feel wonderful and ever-renewing.

  Years ago, I served in the army in Ali, Tibet. In winter, heavy snow blocked the mountains, and the sub-zero temperatures cut off all contact with the outside world. Every day, besides work, we would just stare blankly at the snow-capped mountains and glaciers.

  One day, the girls sitting idly suddenly started arguing, trying to determine how much glucose could balance the bitterness of a berberine tablet. One side said that about 500 ml of 5% glucose would neutralize the bitterness. The other side said that it probably wouldn't work. 500 ml of glucose would be enough, but the concentration would need to be increased, at least to 10%, or even 25%... Unable to reach a consensus, they finally decided to conduct an on-site test. At that time, we were medics, and glucose and berberine were readily available; we decided to try it. The solution is simple: finely grind one berberine tablet in a mortar and pestle, then dissolve it in a 5% glucose solution. Have everyone taste it. If it's no longer bitter, then the answer is found. If it's still bitter, continue adding a higher concentration of glucose until it's no longer bitter, then calculate the proportions.

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