想問慶熙大學同香港那一間學校有結姊妹校

韓國慶熙大學 english name is KYUNG HEE UNIVERSITY, Korean character is 경희대학교.
The University address is:
1 Hoegi-dong, Dongdaemoon-gu, Seoul, 130-701, Korea

That's for Center for International Exchanges. IF it's about your friend's residence/hall then it will be completely different. Try to ask 'em too.

Refer to http://www.bitboost. com/ref/internationa l-address-formats.ht ml, Korean address format is as follows:

AN EXAMPLE ADDRESS FORMATTED FOR MAILING FROM THE UNITED STATES OR WESTERN EUROPE:

Ms. Yi Hun Kyong [person's name]
467 ponji [house number]
Yaum-dong [subdivision or precinct of the city]
Ulsan-si [city name]
Kyongsangnamdo [province]
South Korea [country name: added for mailing from most foreign countries e.g. the United States]

Yes you can use Korean and English at the same time to mail stuff to South Korea. In fact, using English would be better if you are not familiar with Korean characters.

Better to include it! But if you are mailing your application probably you should specify the department too.

Hopefully it helps!