Eunuch Hong was not one of the Four Great Grandmasters. Eunuch Hong was just a role used by the Qing Emperor to confuse the enemy. The true Four Great Grandmasters were Ku He of Northern Qi, Sigu Jian of Dongyi, Ye Liuyun of the Qing Kingdom, and the Qing Emperor himself. Eunuch Hong's strength was mistaken for a grandmaster's, but he was not a true great grandmaster.

Eunuch Hong wasn't one of the four grandmasters in " Celebrating Years." Eunuch Hong was mistaken for a Great Grandmaster because he had defeated Sigu Jian. But in reality, the hidden Great Grandmaster was the Qing Emperor himself. Eunuch Hong was the Qing Emperor's tool. He was mistaken for a Great Grandmaster because he had repelled Sigu Jian's assassination in front of the Qing Emperor's bed. Thus, Eunuch Hong was not one of the Four Grandmasters of the Qing Dynasty.
Yes, Eunuch Hong was not one of the four grandmasters in Joy of Life. Although he had once defeated Sigu Jian, the hidden Great Grandmaster was actually the Qing Emperor himself. Eunuch Hong was the Qing Emperor's tool. He was mistaken for a Great Grandmaster because he had repelled Sigu Jian's assassination in front of the Qing Emperor's bed. Therefore, Eunuch Hong was not one of the four grandmasters in Joy of Life.
Eunuch Hong was not one of the four grandmasters in Joy of Life. Although he had once defeated Sigu Jian, the hidden Great Grandmaster was actually the Qing Emperor himself. Eunuch Hong was the Qing Emperor's tool. He was mistaken for a Great Grandmaster because he had repelled Sigu Jian's assassination in front of the Qing Emperor's bed. Thus, Eunuch Hong was not one of the four grandmasters in Joy of Life.
Eunuch Hong was not one of the four grandmasters in Joy of Life. Although he had once defeated Sigu Jian, the hidden Great Grandmaster was actually the Qing Emperor himself. Eunuch Hong was the Qing Emperor's tool. He was mistaken for a Great Grandmaster because he had repelled Sigu Jian's assassination in front of the Qing Emperor's bed. Thus, Eunuch Hong was not one of the four grandmasters in Joy of Life.
Eunuch Hong was not one of the four grandmasters in Joy of Life. Although he had once defeated Sigu Jian, the hidden Great Grandmaster was actually the Qing Emperor himself. Eunuch Hong was the Qing Emperor's tool. He was mistaken for a Great Grandmaster because he had repelled Sigu Jian's assassination in front of the Qing Emperor's bed. Thus, Eunuch Hong was not one of the four grandmasters in Joy of Life.
Hong Sixiang wasn't the grandmaster in Joy of Life. Eunuch Hong was mistaken for a Great Grandmaster because he had defeated Sigu Jian. But in reality, the hidden Great Grandmaster was the Qing Emperor himself. Hong Sixiang was the Qing Emperor's tool. He was mistaken for a Great Grandmaster because he had repelled Sigu Jian's assassination in front of the Qing Emperor's bed. Therefore, Hong Sixiang was not a grandmaster in Joy of Life.
Eunuch Hong was not one of the four grandmasters in Joy of Life. Eunuch Hong was mistaken for a Great Grandmaster because he had defeated Sigu Jian. But in reality, the hidden Great Grandmaster was the Qing Emperor himself. Eunuch Hong was the Qing Emperor's tool. He was mistaken for a Great Grandmaster because he had repelled Sigu Jian's assassination in front of the Qing Emperor's bed. Thus, Eunuch Hong was not one of the four grandmasters in Joy of Life.
Hong Sixiang was a character in Joy of Life, and he was mistaken for one of the Four Grandmasters. However, according to the information provided, Hong Sixiang's strength was only among the Rank-9 experts and had not reached the level of a Grandmaster. The Qing Emperor was the true hidden grandmaster. He had displayed the strength of a grandmaster in the battle of Dong Mountain. Hong Sixiang's existence was just a hype created by the Qing Emperor to hide his true identity. Therefore, Hong Sixiang was not a true grandmaster. His strength had been exaggerated.
Eunuch Hong did not win against the three Great Grandmasters. In " Celebrating Years," the Qing Emperor was the true Great Grandmaster, and Eunuch Hong was only the Qing Emperor's cover. He was mistaken for a Great Grandmaster. In an intense battle, the Qing Emperor and Eunuch Hong fought against the three Great Grandmasters. In the end, Eunuch Hong was pincered and disappeared into thin air before the Qing Emperor made his move. The Qing Emperor first used a punch to knock down Sigu Jian. Then, with the strength of a grandmaster, he crossed half a lake with a finger and poured a large amount of zhenqi into Ku He's body, causing his meridians to explode. Thus, Eunuch Hong did not succeed in dealing with the three Great Grandmasters. The Qing Emperor was the one who ultimately defeated them.
Eunuch Hong had adopted a strategy to deal with the three Great Grandmasters. In Joy of Life, Eunuch Hong was mistaken for a Great Grandmaster, while the Qing Emperor hid his true identity. In an intense battle, Eunuch Hong was attacked by two other Great Grandmasters and disappeared. However, the Qing Emperor took the opportunity to attack. He displayed his true Great Grandmaster strength and defeated Ku He and Sigu Jian. This showed that Eunuch Hong was only a cover for the Qing Emperor. The Qing Emperor was the Great Grandmaster who truly hid the deepest. Thus, Eunuch Hong did not deal with the three Great Grandmasters. Instead, the Qing Emperor played a key role in the battle.