Liu Bowen was sixty-five years old when he died.
In late January of 1375, Liu Bowen accidentally contracted a cold. After Zhu Yuanzhang found out, he sent the then Prime Minister Hu Weiyong and several imperial doctors to visit Liu Bowen. The imperial doctor diagnosed Liu Bowen's illness. After taking the medicine according to the prescription prescribed by the imperial doctor, Liu Bowen felt as if there was a stone in his stomach, which made him very uncomfortable.
In mid-February, after meeting Zhu Yuanzhang, Liu Bowen tactfully told Zhu Yuanzhang that he would feel uncomfortable after taking the imperial medicine. However, Zhu Yuanzhang did not take it seriously and just comforted Liu Bowen with a few words and asked him to pay attention. Rest, Zhu Yuanzhang's words made Liu Bowen feel chilled.
A month later, in late March, Liu Bowen's condition gradually worsened, and he returned to his hometown accompanied by his son. Shortly after returning to his hometown, Liu Bowen died on April 16 at the age of Sixty-five years old.
Extended information:
After Zhu Yuanzhang heard the news of Liu Bowen's death, he was thinking about a military book "A Hundred Battles" written by Liu Bowen based on his life experience.
Not long after, Zhu Yuanzhang sent Prime Minister Hu Weiyong to pay tribute to Liu Bowen at his home. It was like this on the surface, but secretly Zhu Yuanzhang also arranged something for Hu Weiyong, which was to bring back "A Hundred Wars" no matter what.
The first thing Hu Weiyong did after arriving in Qingtian County was to look for the military book "A Hundred Battles". Liu Bowen's son told him that the military book had been burned, but his father left a copy of "Yu Ion" and a letter to the emperor. Hu Weiyong returned to Beijing with the book and letter.
Hand the books and letters to Zhu Yuanzhang. After seeing "Yu Ion", Zhu Yuanzhang became restless. Unwilling to be reconciled, Zhu Yuanzhang sent people to take away all the books and letters that Liu Bowen had left during his lifetime, as if they were confiscating his house. However, Still can't find the military book "A Hundred Battles".
Before his death, Zhu Yuanzhang told Zhu Yunwen that he must find "A Hundred Battles" and never let this military book fall into the hands of people with foreign surnames. But what is surprising is that in the subsequent rule of the Ming Dynasty, It's as if "The Legend" was really burned and never appeared again.
Where did Liu Bowen’s military book "A Hundred Battles" go? This mystery was not finally revealed until more than two hundred years later, in the 17th year of Chongzhen, when Li Zicheng, the rebel king, invaded Beijing.
Li Zicheng found the "Yu Ion" handwritten by Liu Bowen among the debris in the Ming Dynasty palace. Because he admired Liu Bowen very much, he read it carefully, just because of the age, "Yu" Many of the pages of the book were torn, but I accidentally discovered that there was another book inside the page, which was "A Hundred Battles" that had been lost for two hundred years.
Baidu Encyclopedia—Liu Bowen