Huiyan, I did understand you, You aren't understanding me. I'm simply saying that you shouldn't worry about your hamster dieing unduly.
I never thought you meant that you wanted your hamster to die. I'm just telling you not to worry about when your hamster dies and to just enjoy her while she's still with you
Why don’t you have a read over the
Hamster Central website there are many helpful articles and things you can do to help your hamster live a longer life.
Please check this link below for many good articles on hamster health, from what veggies and treats to feed, to hamster first aid kits and routine health checks, and what to look for in an old hamster.
http://www.hamstercentral.com/healtharticles.htm