Clean the pumpkin, remove the seeds, and cut it into bite-sized pieces.
Place the pumpkin in a steamer and steam for 15 minutes, then let it cool.
Thinly slice cucumber and onion.
Cut the boiled eggs into bite-sized pieces.
In a bowl, mix the pumpkin, cucumber, onion, and eggs. Toss with olive oil, salt, and pepper.
Arrange beautifully on a plate to serve.