Why do mosquitoes bite me?

A few days ago, some mosquitoes came into my house, I hate it!

Every night when I sleep, they will suck my blood, bite out a lot of bags, and itching is terrible. Sometimes I will wake up. I had to hide in my grandfather's house to go to sleep. But the mosquitoes are coming! What should I do?

We opened the door to the bathroom next to the bedroom, lit up the night light and let the mosquitoes in. Close the door again and destroy them. Then we went back to the house to go to bed.

However, after a few days, mosquitoes came to chase me. Why? Then I took a shower before going to bed every day, they didn't bite me. Do you know why?

Second grade: feifei