Clean the squid thoroughly and separate the body from the legs.
Wrap the tofu in a cloth and squeeze out excess water, then crumble it finely.
Finely chop the onion, carrot, and green onion.
In a bowl, combine the chopped vegetables, tofu, boiled chicken breast, and season with salt and pepper.
Stuff the filling into the squid body and secure the opening with a toothpick.
Place the stuffed squid in a steamer and steam for 15 minutes.
Let it cool and cut into bite-sized pieces.