The common sayings that describe self-contradiction are as follows:
1. As the saying goes: A good horse never turns back to eat grass; but as the saying goes: A prodigal son never turns back for gold!
2. As the saying goes: Rabbits don’t eat grass beside their nests; but as the saying goes: The one who is near the water first gets the moon!
3. As the saying goes: The prime minister’s belly can hold a boat; but as the saying goes: Don’t take revenge if you have a grudge. You are not a gentleman!
Slang is idiomatic expression, which refers to the spoken language that has been established by convention and is widely popular in a certain time and place. From a broad perspective, colloquialisms include proverbs, idioms, and commonly used idioms, but do not include idioms in written language that are not popular and elegant, or famous aphorisms in classics.
In a narrow sense, colloquialism is a language with regional characteristics. Common sayings come from a wide range of sources, not only from the oral creations of the people, but also related to famous poems, aphorisms, historical allusions, etc.
The relationship between common sayings and proverbs is the whole and part, and proverbs are a component of common sayings. Proverbs are also common sayings, but common sayings are not necessarily proverbs. For example: "I woke up at five o'clock and rushed to the late market", "You walk on your Yangguan Road, I cross mine on the single-plank bridge", which can only be regarded as common sayings rather than proverbs.
The characteristic of proverbs is that they reflect profound truths in simple and concise words, covering all areas of people's lives. The most common ones are agricultural proverbs and meteorological proverbs, such as: "An ant moving in a snake aisle is bigger than a snake coming soon." "Arrived", "Three layers of wheat quilt will be used this winter, and steamed buns will be used as pillows next year."
There are also philosophical, health-care and moral aspects, such as: "If you keep the green hills, you won't be afraid of running out of firewood." It is better to give a mouthful when you are hungry than to give a measure when you are full.”