Why are all the little Superman on the planet a group of 9-year-old children?

The five Superman were originally separated by one person, so there should be no age difference, and the cartoon character Superman is set at 9 years old. The League of Happy Heroes, formerly known as Happy Baby, is a long brand animation series directed by Huang Weiming, the former director of Pleasant Goat and Big Big Wolf. Broadcast on 20 10, one episode 13 minutes.

Based on humorous plots, the film tells the careless stories of five cute little superman, happy hero, sweetheart superman and flower heart superman. S and beware of Superman, who fought bravely and took risks against the "strange general" and "strange corporal" who tried to invade the planet.

The origin of the five superman:

These five Superman were originally five energy stones on Qiyuan Star. Later, these five stone heads were transformed into five mechanical stones, which were attached to the machine and became Superman. Although it has been attached to the locomotive, the locomotive is damaged and still cannot be rebuilt. See you later, doctor. H fixed the motorcycle and Superman woke up. To repay the doctor. H, Happy Heroes and other Superman stay on the planet to defend.

The planet has one of the five interstellar energy cores and is often invaded and plundered by hostile forces. The energy core of this planet is the incarnation of the ancient Superman.

Refer to the above? Baidu Encyclopedia-Happy Baby

Refer to the above? Baidu encyclopedia-planet

Refer to the above? Baidu Encyclopedia-Happy Hero