Continued to make money in the stock investment

I had reported I buy some 600030 shares in china stock market several days ago,After the day I buy this largest security company in China,It return my 5% profit(although It rise up 10% actually),Because I am not sure whether it is a “V trend”,I am not use all of my finance capital in it.But yesterdat,I buy some 600030 more,Because,It seems very strong.I had not use all of my capital yet.My strategy is:”If win,double,Otherwise,stop lose”.Ok, say “good luck” to me,Thanks!