Flame color reaction, also known as flame color test and flame color test, is a reaction that causes the flame to show a special color when certain metals or their compounds are burned in a colorless flame. In chemistry, it is often used to test whether a certain metal is present in a compound. At the same time, using flame color reaction, people consciously add specific metal elements to fireworks to make them more colorful.
———————The above are all taken from Baidu Encyclopedia.
Seven years ago, eighteen-year-old Lu Shiyan met 22-year-old Yuan Cheng for the first time.
Seven years later, 25-year-old Lu Shiyan met 29-year-old Yuan Cheng again.
When the fireworks go up, can you dance with me on the beach?
Motto: Growing up is a good thing.