yydbxx(Ye Yu Dou Bi Xue Xiao) is an association which helps students learn the skills of pen-striking. This association is also called the Amateur Pen Striking Association, or A.P.S.A..
Me, the founder of this association, is now studying at SJTU(Shanghai Jiao Tong University).
This website is built in order to share my study experience in A.P.S.A..
Public GPG Key (FC6CF4809BDC232B)
Email: linsy_king@sjtu.edu.cn