Xiao En had not become a Great Grandmaster because after he had been captured by the Qing Kingdom, he had been locked up in the Overwatch Council for 20 years. He had been tortured and tortured, and his body and mind had been damaged by the poison of the Third Bureau. This prevented him from advancing to the realm of a Great Grandmaster.

In Joy of Life, Sean was not explicitly described as a master. He was described as a master of Level Nine and above, and his martial arts skills were second only to the Great Grandmaster. Although Sean was an expert among experts when he was young, his strength had decreased as he grew older. Therefore, according to the information provided, Sean was not a master.
In Joy of Life, Xiao En was described as a master above Level Nine, but it was not explicitly stated whether he had reached the Grandmaster level. Although Sean was an expert among experts when he was young, his strength had declined due to his age and physical condition. Therefore, it was impossible to determine if Sean had reached the Grandmaster level.
Xiao En's Kung Fu was not clearly described as being at the level of a Great Grandmaster. In Joy of Life, Sean was portrayed as a ninth-level master. Although he was a master among masters when he was young, his strength declined as he grew older. His performance in the movie was also overestimated by some people. He did not show the strength of a grandmaster that he had expected in some situations. Therefore, according to the information provided, Xiao En's martial arts were not described as being at the level of a Great Grandmaster.
Xiao En's Kung Fu was not clearly described as being at the level of a Great Grandmaster. In Joy of Life, Sean was portrayed as a ninth-level master. Although he was a master among masters when he was young, his strength declined as he grew older. His performance in the movie was also overestimated by some people. He did not show the strength of a grandmaster that he had expected in some situations. Therefore, according to the information provided, Xiao En's martial arts were not described as being at the level of a Great Grandmaster.
When Sean was young, he was considered to be second only to the four Grandmasters, and his martial strength far exceeded that of other people. However, as time passed, Xiao En's strength gradually declined, and he could no longer compare to the four Grandmasters and their disciples. Therefore, it could be said that Sean once had the strength of a Grandmaster, but he gradually lost that strength as the plot developed.
Xiao En's Kung Fu was not clearly described as being at the level of a Great Grandmaster. Although Sean was an expert among experts when he was young, his strength had decreased as he grew older. In Joy of Life, Sean was portrayed as a Level Nine master, although he did not show the strength of a Grandmaster in some situations. Therefore, according to the information provided, Xiao En's martial arts were not described as being at the level of a Great Grandmaster.
Regarding the question of how the grandmaster in Joy of Life became a grandmaster, the following conclusions could be drawn: 1. Ye Liuyun became a martial grandmaster because he had comprehended the Flowing Cloud Sanshou in his battle with Wu Zhu. He had given up on swordsmanship and created a set of ancient Sanshou techniques, eventually becoming a martial grandmaster. 2. The Qing Emperor had become a Great Grandmaster because Ye Qingmei had given him a secret manual for Tyrannical zhenqi. Through cultivating Tyrannical zhenqi, the Qing Emperor gradually recovered his body and finally became a Great Grandmaster. 3. Ku He had become a great grandmaster because he had cultivated the heart technique of Tianyi Dao in the game Joy of Life. He had also gone through bitter cultivation and finally entered the realm of great grandmaster. To sum up, the grandmasters in Joy of Life became grandmasters through different methods and cultivation methods, including understanding Sanshou techniques, practicing Tyrannical zhenqi, and Tianyi Dao mental cultivation method.
Xiao En was a character in Joy of Life. He was a powerful official of Northern Qi and was in charge of intelligence work. He eventually died from excessive blood loss. Xiao En lost his status and power in the play, but after being rescued by Fan Xian, he was put in an important position again. He was a man of iron and steel, and he remained silent even when he was being tortured. In the battle with Lang Tiao and Friar He, Xiao En had been seriously injured. He had been saved by Fan Xian, but he had lost too much blood and died in the end. Before he died, Xiao En revealed the secret he had hidden for many years to Fan Xian. He told him that the legendary Temple really existed. This was also the reason why so many people were chasing after him. Fan Xian finally confirmed that Xiao En was not lying.
Xiao En was a character in the TV series " Joy of Life." He was the leader of the Jinyiwei, Northern Qi's intelligence agency. He was also the king of the night. He had once experienced many hardships and narrowly escaped death before he found the temple and had a tragic fate with Ye Qingmei. In the movie, Xiao En was captured and imprisoned by Chen Pingping for more than twenty years, and he was tortured. In the end, he successfully escaped from the imprisonment, but he was seriously injured during the escape and his heart meridian was cut off by Lang Tiao. Although Fan Xian had saved him and told him the secret of the Temple, his heart had been broken. Not long after, he passed away in the cave. Xiao En's ending was tragic. He had been loyal to Qi all his life, but it ended in a tragic way.
Joy of Life had three conditions to become a Grandmaster. First, he needed to obtain the martial arts secret techniques that Ye Qingmei had given him, including the Tianyi Dao mental cultivation method, the sword intent of caring for the front and ignoring the back, and the nameless martial art. These secret techniques were the key to becoming one of the Four Great Grandmasters. Secondly, he needed to experience a chance encounter. For example, when he was in a death situation during the expedition against Great Wei, he had been saved by Chen Pingping. Finally, he needed to have a tenacious mind and experience a near-death experience on the battlefield before he could comprehend the cultivation method. None of these conditions could be missing, which was why the Qing Emperor became a Great Grandmaster.