O(∩_∩)o ... Haha, this is simple. Can you give me some advice? I can explain everything, absolute authority! Hehe)

First of all, www stands for World Wide Web.

Secondly, pku (nowadays "bei jing" is generally translated into English by the Chinese pinyin "Beijing", and in the past "Beijing" was translated into English as "peking"), so pku is the abbreviation of Peking University.

Third, education is the first three letters of education.

Finally, cn is the abbreviation of china (China).