变与不变Changed and unchanged

狗问猫：什么是变，什么是不变？

猫说：时隔千百年，花草仍相似。时隔才数日，人心却不同。

The dog asks the cat: What is the change and what is the same?

The cat said: After thousands of years, the flowers are still similar. Only a few days later, the hearts of the people are different.