Double eucalyptus trees.

When the Buddha passed away, there were two cypress trees around him, one withered and the other flourishing. The double trees in the east mean "permanence and impermanence", the double trees in the south mean "pleasure and no happiness", the double trees in the west mean "self and no-self", and the double trees in the north mean "purity and non-purity." From this You know, the so-called double cypress trees actually represent the cycle of all things in the universe, from prosperity to withering, and from withering to prosperity, just like life and death. People die every day, but people are born every day. Human culture and history are also In this way, from decline to prosperity, from prosperity to decline, prosperity and destruction alternate in turn, extending from generation to generation, never ending. In addition, the so-called "permanence and impermanence", "happiness and no happiness" also prove that everything in the world, tangible and intangible, has two opposite sides. Nothing is single. Therefore, smart people look at things. Don't just focus on one side, there must be advantages and disadvantages. The extreme happiness will naturally lead to sadness, and the extreme will be fine. You must know that life is changing all the time and runs according to the law of prosperity and decline.