Life is like a piano: the white keys are happiness and the black keys are sadness. However, remember that only black and white keys's ensemble can produce wonderful music.

The landlord is good, life is like this, but happiness is greater than sadness, isn't it?

So generally speaking, we musicians are more emotional.

But we are happy to live in our own music world.

If there is anything unclear, the landlord can ask again.

The so-called standard answer may not exist.

Someone always knows part of the answer to your question.

But the answer will grow forever, and between the answer and the answer, it will grow into a new answer.

Knowledge is alive. No matter which answer you know, I sincerely hope that you can adopt someone who really helps you.

In the new year, I wish the landlord all the best, all his wishes come true and the whole family is happy.