What is the central idea of a shell, what is the main content of A Shell ?

The central idea: The author wants to use this shell (towu) to express some of his feelings (sustenance).

Colorful shells have the value of beauty, but they are not comparable to the value of pearls born from "one shell". Because, the former only pleases and honors people with its gorgeous appearance, while the latter shows and dedicates itself to people with its precious interior. This difference in value depends first and foremost on the extraordinary experience of this shellfish.

If there were no pebbles to drill in, I am afraid that "a shell" would still be just a shell, at best, adding an inconspicuous character to the many ornate shells. It is precisely because of this shell's life that there is an additional tribulation, so there is also an opportunity to go to glory and achieve a great self. The second depends on the attitude towards pain.

In the face of this pain and suffering, whether you suffer in silence, devour it, digest it, and use it to generate useful new things, or shout, be restless, or even cry and despair, determines whether you become an expensive "pearl" or a worthless "dung".

And the respectability of this shell lies in his uncomplaining and unrelenting intervention in the angular hard stone, he admitted, accepted, endured, and tried to nurture it, thus perfecting himself, perfecting the stone, and achieving the pearl.

In addition, there is a valuable added value in the value of this shell, that is, after he "polished" it into pearls, it is not revealed, not publicized, and not sold, and finally chooses to retire quietly. The children's search for this shell can inspire people's nostalgia and respect for this shell.

That's right.

The article depicts the story of a shell that endures pain, suffering, and endurance and does not become a brilliant and colorful shell like other shells, but he gives birth to a precious pearl. The author's language is simple and plain, but there is no lack of philosophy, although the shell in the pen is ugly in appearance, it contains English and Chinese, its spirit is awe-inspiring, and its experience is thought-provoking.

The article tells the story of a shell that endures pain, suffering, and endurance and does not become a dazzling and beautiful shell like other shells, but gives birth to a rare and precious pearl. Like most shellfish, this shell has been soaked in salty seawater and has been subjected to wind and waves.

But unlike other shells, a hard, angular stone burrowed into his shell, and so there was unspeakable pain, but he was able to silently endure the inner torment, and with the blood and flesh fused with his own life, he made a large pearl, and finally became a venerable shell.