[按：下文是发往群邮件的内容。注：几年前搜集了一些邮件地址（多数是国内天文界的学者，也有少数老外），隔三差五就发一封群邮件 。有一部分群邮件的内容以“午夜随想”为题放在这里。]

Recently, I have learned that the `salaries' of students for marster degree here are still on a level of  about 200 Yuan (or 28.57 US dollars, if one dollar exchanges seven Yuans), an amount I knew in the mid 1990's when I was an undergraduate student.