The first theory is that Yue Fei made his first Northern Expedition when he was in his early 30s.

The second theory: 1136 AD (the sixth year of Shaoxing). In the sixth year of Shaoxing, Yue Fei launched his second Northern Expedition. Yue Fei soon found that he was alone and had no reinforcements or food, so he had to withdraw to Ezhou (today's Wuchang, Hubei Province). During this Northern Expedition, Yue Fei's ambition was not fulfilled. When he was guarding Ezhou, he wrote the eternal masterpiece "Man Jiang Hong".

The third theory: The specific time of creation of "Man Jiang Hong" should be shortly before Yue Fei was imprisoned.

Original text

I was so angry that the rain stopped at the corner. Looking up, looking up to the sky and roaring, with strong feelings. Thirty years of fame and dust, eight thousand miles of clouds and moon. Don't wait to see the young man's head grow white, and it will be empty and sad.

Jingkang’s shame is still not over. When will the hatred of the ministers be destroyed? Driving a long car, crossing the gap in Helan Mountain. The ambition is to eat the meat of Huns when they are hungry, and to drink the blood of Huns when they are thirsty. Waiting to start over, clean up the old mountains and rivers, and face the sky.

Translation

I was so angry that my hair stood up and my hat flew off. Climbing high and leaning on the railing alone, I saw that the sudden wind and rain had just stopped. Looking up at the sky, I can't help but scream up to the sky, filled with the heart of serving the country.

Although he has established some fame over the past thirty years, it is as insignificant as dust. He has traveled 8,000 miles from north to south and has gone through many turbulent lives. Good men, you should seize the time to make contributions to the country, and don't waste your youth in vain and wait for your old age to be miserable.

The shame of the Jingkang Incident has not been washed away to this day. When will the resentment of being a subject of the country be wiped out! I will drive a chariot to attack Helan Mountain, and even Helan Mountain will be leveled. I am full of lofty ambitions. When I am hungry during the war, I will eat the enemy's flesh. When I am talking and laughing, I will drink the enemy's blood. After I regain the old mountains and rivers, I will report the victory news to the country with the good news.

Extended information:

Comments from famous experts

Shen Jifei of the Ming Dynasty: "The courage, opinions, and articles are unprecedented in history." ("Yuzheng Collection of Caotang Poems")

Pan Youlong in the late Ming Dynasty and early Qing Dynasty: "The courageous opinions surpass those of modern and ancient times." ("The Remaining Drunkenness of Ancient and Modern Poetry")

Liu Tiren in the late Ming Dynasty and early Qing Dynasty: "The lyrics are the same as those of ancient poetry. The righteous person, 'Xiaoxiao Rain Breaks', is also the song of "Yishui"" ("Qi Songtang Ci Interpretation")

Shen Xiong of the Qing Dynasty: "The loyalty and anger are obvious in "Man Jiang Hong", and he does not want to take it easy. When a young man's head turns white, his thoughts can be understood." (Volume 1 of "Ancient and Modern Ci Hua·Ci Hua")

Ding Shaoyi of the Qing Dynasty: "When I discuss it in the Xielu Palace, I still feel passionate and generous, and it makes me dance with joy when I read it. "(Volume 9 of "Tingqiu Shengguan Ci Hua")

Chen Tingzhuo of the Qing Dynasty: "What a spirit! What an ambition! Reading it for thousands of years, the two words "Don't take it easy" will be remembered for thousands of years. "Proverbs" ("Bai Yuzhai Ci Hua")

Reference: Baidu Encyclopedia - Manjianghong·Angry Crown