again the cover letter (may be a little bit long) I have a great interest in economic development and poverty, as well as social policy issues. I am a student majored social security, but I found the existing social security policies are allowing vulnerable groups unprotected before a lot of severe risks. There are many families in China impoverished because of illness, and many elderly people living a solitary life. Especially last winter, I had the opportunity to deep into rural areas of Jiangxi province with my mentor. I saw a lot of left-behind children study in their dilapidated classrooms, and their home with the same poor living conditions. I wonder why there are a few people enjoying the extremely rich life while other large of the population live in such poverty and cannot extricate themselves? What will other countries do when facing with similar problems, such as the United States? What kind reform is needed to both boom the economic development, and also social equality?