When I was a child, I couldn't understand "great joy and great sorrow" when I read Huangdi Neijing. I think it is human nature that people are happy at every happy event. People who win the lottery need to "laugh wildly" to be so lucky.
I once saw the news that a teacher Wu celebrated his 80th birthday. In the face of the guests coming from children and grandchildren, Mr. Wu is very excited, and there are always endless words with the guests. Going back to my children and grandchildren at night is still full of laughter and peace of mind. Just as he was chatting happily, he suddenly "shrank" from the sofa, and his children quickly called an ambulance to take the old man to the hospital. The result of the examination was acute myocardial infarction, but fortunately, the rescue was timely and the life was saved.
Hearing this news, I remembered the word "laughing to death", which is really not nonsense. In the Biography of Yue Fei, there is a story of "Angry at the martial arts and laughing Niu Hao to death". According to legend, when Jin Wushu invaded the Central Plains for the fifth time, he was defeated and hanged by Niu Hao. He was so angry that Niu Hao was so happy that he died without wanting to come up.
It can be seen that there were many people who threatened their lives because of excessive joy and excitement in ancient times and real life. "Great joy and great sorrow" and "great joy and great sorrow" are indeed facts and cannot be ignored.
Chinese medicine tells us that laughter must be a smile, a smile with wide eyes and a controlled smile, which is beneficial to physical and mental health. If you laugh wildly, your mood will be over-excited, which will easily lead to systemic vasoconstriction, accelerated breathing and heartbeat, and increased blood pressure, which will lead to a serious shortage of blood supply to the heart and brain, which will easily lead to acute attacks of cardiovascular and cerebrovascular diseases and even sudden death.
Everything is too much, and you need great wisdom in the face of "great joy"!