My parents brought the insurance in Beijing, which is about $125 for 3 months for both of them. But they never actually used it, so I'm not sure how good it is.

You can search for more information on Baidu.

很久前有那种一天一块钱的保险(对学生来讲)，对老人们要贵些，但是不知道现在是否还有类似的保险