It is a famous sentence in Lu You's book Anger, which is the representative work of the author's seven poems. In the poem, I reviewed my life and expressed my grief and indignation because I didn't get what I wanted.

The second sentence of Introduction: Praise Zhuge Liang for advancing despite difficulties and persisting in the Northern Expedition. No one can compare with him for thousands of years. In 227, in the fifth year of Jianxing, Zhuge Liang led the army to attack Wei, and when he left, he gave a model to express his mind. Here, the author praises Zhuge Liang in order to express his desire to make contributions to the country. At the same time, it is also a mockery of the past, satirizing that no one in North Korea presided over the Northern Expedition, leaving heroes useless.

Celebrity, the name is passed down to future generations; Equality, the order between brothers, is long for bo, second for zhong, and later extended to measure the order of characters.