Thanks a lot for your help.
I found this on the web :
https://answers.yahoo.com/question/i...1203117AAsBqa1
" 天龍 神宝 真邪 避鵰 are four "couplet words." They're actually buddhist words widely used in Chinese kung fu novels such as 神鵰俠侶，天龍八部，倚天屠龍記 etc. Their origins are related with Buddhist religion in China and Japan, their original meanings are now lost ".
a user also reported this link :
http://www.mistyhill.org/~barubaru/t...a/report2.html
It would be very interesting if someone could tell me more about that.
Thanks