Xiaobian will give you a detailed explanation here. Shimada Hanzo, a mountain pepper fish, found that the strength of three people was superior in the process of fighting orochimaru, a master of thousands of hands in Jiraiya. However, although the strength of three people was very strong, it could not be compared with the strength of Huo Ying. If three people can always unite and fight together, then three people will become very good people. In the later period, these three people did not live up to the expectations of Shimada Hanzo, a mountain pepper fish, and became powerful figures, and the master of thousands of hands also became the fifth generation of Huo Ying.
Shimada Hanzo, a mountain pepper fish, had to wear a mask when he was very young, because of the very intense toxin accumulated in his body. Although his body contained a lot of poison, it didn't affect him to become stronger and better. However, during World War II, he obviously stood on the opposite side of Konoha, so this is also one thing that Shimada Hanzo, a mountain pepper fish, did wrong.
In fact, in essence, Shimada Hanzo, a mountain pepper fish, did not give these three people a chance to get a name by standing on high, but praised and affirmed their strength. Of course, these three people didn't live up to the expectations of Shimada Hanzo, a mountain pepper fish, and became very outstanding figures.