Does it make sense to say that "the ears are as thin as paper and bitter as hell"? Is there a scientific basis?

This is a rural proverb with no scientific basis. It's best not to believe it.

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People in ancient rural areas like to look at a person's face and palm, as well as birthdates, to judge whether a person's fate is good or bad, so there is fortune telling! For example, ten mules in your hand are hard work! Women, women have high cheekbones, Foucault! Wait a minute. The meaning of "ears are as thin as paper and bitter as hell" is very simple. That is to say, if a person's ears are very thin, then this person's fate is very bad and his life is bumpy and difficult. This statement has no exact scientific basis, and we can't believe it all, let alone take it as a reason for success or failure in life.

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In the traditional culture of China, ears represent a person's fame and prestige. If you have good ears, you will be famous for life. Bad ears, a mess all my life. But in fact, there is no scientific basis for judging a person's future success or not. In ancient China, there was such a saying because the culture was not widely spread and superstitious. Nowadays, people should believe that their destiny is in their own hands. No matter what they look like, as long as they work hard, whether they succeed or fail, they will die without regret! In other words, no matter how thick your ears are, no matter how blessed you are, if you are lazy and don't work hard, your blessings will run out sooner or later.

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In fact, whether a person's ears are thin or thick, big or small, and whether there is an earlobe depends on his parents' inheritance. You can't believe them all, let alone use them as a reason for success or failure in life. Proverbs are a kind of traditional culture in China, but as modern people, we should learn to get rid of their dross.