The four major points of happiness in life are: meeting the rain after a long drought, meeting an old friend in another country, the wedding night, and being the first time.
The four tragedies in life refer to: the loss of a father in a teenager, a spouse in middle age, a child in his later years, and a mentor.
These eight things well sum up the ups and downs of life. Not a word hit the nail on the head.
Sigh that life is not easy, although the road ahead is full of thorns, but as long as you work hard, you will eventually walk on the road covered with flowers.